Record Information |
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Version | 5.0 |
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Status | Detected but not Quantified |
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Creation Date | 2017-08-01 02:19:04 UTC |
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Update Date | 2023-02-21 17:31:16 UTC |
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HMDB ID | HMDB0094696 |
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Secondary Accession Numbers | |
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Metabolite Identification |
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Common Name | N-Methyl-L-proline |
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Description | N-Methyl-L-proline, also known as N-methyl-L-proline, (2S)-1-methylpyrrolidine-2-carboxylic acid, hydric acid, or monomethyl proline, is classified as a proline or a proline derivative. It is not naturally produced by humans and can only be obtained from the diet. In particular, it is a metabolically inert cell protectant found in many plants and is used by plants to protect against extremes in osmolarity and growth temperatures. N-Methyl-L-proline is found in the fruit juices of yellow orange, blood orange, lemon, mandarin, and bitter orange (PMID: 21838291 ). |
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Structure | InChI=1S/C6H11NO2/c1-7-4-2-3-5(7)6(8)9/h5H,2-4H2,1H3,(H,8,9)/t5-/m0/s1 |
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Synonyms | Value | Source |
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(-)-N-Methyl-L-proline | ChEBI | (2S)-1-Methylpyrrolidine-2-carboxylic acid | ChEBI | (2S)-1-Methylpyrrolidine-2-carboxylate | Generator | N-Methylpyrrolidine-2-carboxylate | HMDB | N-Methylpyrrolidine-2-carboxylic acid | HMDB | (-)-Hygric acid | HMDB | (-)-Hygrinic acid | HMDB | (2S)-1-Methyl-2-pyrrolidinecarboxylic acid | HMDB | (S)-1-Methylpyrrolidine-2-carboxylic acid | HMDB | 1-Methyl-L-proline | HMDB | Hygric acid | HMDB | Hygrinic acid | HMDB | Monomethyl proline | HMDB | N-Methylproline | HMDB | N-Methyl-L-proline | ChEBI |
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Chemical Formula | C6H11NO2 |
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Average Molecular Weight | 129.157 |
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Monoisotopic Molecular Weight | 129.078978601 |
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IUPAC Name | (2S)-1-methylpyrrolidine-2-carboxylic acid |
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Traditional Name | (2S)-1-methylpyrrolidine-2-carboxylic acid |
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CAS Registry Number | 475-11-6 |
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SMILES | CN1CCC[C@H]1C(O)=O |
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InChI Identifier | InChI=1S/C6H11NO2/c1-7-4-2-3-5(7)6(8)9/h5H,2-4H2,1H3,(H,8,9)/t5-/m0/s1 |
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InChI Key | CWLQUGTUXBXTLF-YFKPBYRVSA-N |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as proline and derivatives. Proline and derivatives are compounds containing proline or a derivative thereof resulting from reaction of proline at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom. |
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Kingdom | Organic compounds |
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Super Class | Organic acids and derivatives |
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Class | Carboxylic acids and derivatives |
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Sub Class | Amino acids, peptides, and analogues |
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Direct Parent | Proline and derivatives |
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Alternative Parents | |
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Substituents | - Proline or derivatives
- Alpha-amino acid
- L-alpha-amino acid
- Pyrrolidine carboxylic acid
- Pyrrolidine carboxylic acid or derivatives
- N-alkylpyrrolidine
- Pyrrolidine
- Tertiary amine
- Tertiary aliphatic amine
- Amino acid
- Monocarboxylic acid or derivatives
- Carboxylic acid
- Organoheterocyclic compound
- Azacycle
- Amine
- Organic nitrogen compound
- Organic oxide
- Organopnictogen compound
- Organic oxygen compound
- Organooxygen compound
- Organonitrogen compound
- Carbonyl group
- Hydrocarbon derivative
- Aliphatic heteromonocyclic compound
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Molecular Framework | Aliphatic heteromonocyclic compounds |
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External Descriptors | Not Available |
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Ontology |
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Physiological effect | Not Available |
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Disposition | |
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Process | Not Available |
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Role | Not Available |
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Physical Properties |
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State | Not Available |
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Experimental Molecular Properties | Property | Value | Reference |
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Melting Point | Not Available | Not Available | Boiling Point | Not Available | Not Available | Water Solubility | Not Available | Not Available | LogP | Not Available | Not Available |
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Experimental Chromatographic Properties | Not Available |
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Predicted Molecular Properties | |
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Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Kovats Retention IndicesUnderivatizedDerivatized |
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Spectra |
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| GC-MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Predicted GC-MS | Predicted GC-MS Spectrum - N-Methyl-L-proline GC-MS (Non-derivatized) - 70eV, Positive | splash10-003u-9000000000-a9f0c1495628cc9c75ce | 2017-09-14 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - N-Methyl-L-proline GC-MS (1 TMS) - 70eV, Positive | splash10-001i-9000000000-f51fbbd865101c41837d | 2017-10-06 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - N-Methyl-L-proline GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |
MS/MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Experimental LC-MS/MS | LC-MS/MS Spectrum - N-Methyl-L-proline 35V, Positive-QTOF | splash10-001i-9000000000-b048bdbcc2022df74c67 | 2021-09-20 | HMDB team, MONA | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - N-Methyl-L-proline 10V, Negative-QTOF | splash10-0059-5900000000-fd0d93f21da1193009c0 | 2017-09-14 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - N-Methyl-L-proline 20V, Negative-QTOF | splash10-001i-9500000000-684e7fe69e92457d45ad | 2017-09-14 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - N-Methyl-L-proline 40V, Negative-QTOF | splash10-0006-9000000000-69543e785b0295ddb016 | 2017-09-14 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - N-Methyl-L-proline 10V, Positive-QTOF | splash10-001i-1900000000-53fa956a6a5caf91dbb6 | 2017-09-21 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - N-Methyl-L-proline 20V, Positive-QTOF | splash10-001i-9700000000-d7884ff78cf8b3c26fbd | 2017-09-21 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - N-Methyl-L-proline 40V, Positive-QTOF | splash10-0006-9000000000-ad0cadd28741c217b448 | 2017-09-21 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - N-Methyl-L-proline 10V, Negative-QTOF | splash10-004i-0900000000-dd75a729997242516d79 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - N-Methyl-L-proline 20V, Negative-QTOF | splash10-004i-5900000000-a1fc2caf36fc4f45aeeb | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - N-Methyl-L-proline 40V, Negative-QTOF | splash10-0uel-9100000000-2f4b5550a7cef2e49c31 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - N-Methyl-L-proline 10V, Positive-QTOF | splash10-001i-9500000000-8590220dbbccbc1de896 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - N-Methyl-L-proline 20V, Positive-QTOF | splash10-001i-9000000000-92970488b578ae4a5b9b | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - N-Methyl-L-proline 40V, Positive-QTOF | splash10-001l-9000000000-f8fdf82d5fce17eadca6 | 2021-09-22 | Wishart Lab | View Spectrum |
NMR SpectraSpectrum Type | Description | Deposition Date | Source | View |
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Predicted 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum |
IR SpectraSpectrum Type | Description | Deposition Date | Source | View |
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Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M-H]-) | 2023-02-04 | FELIX lab | View Spectrum | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+) | 2023-02-04 | FELIX lab | View Spectrum | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+) | 2023-02-04 | FELIX lab | View Spectrum |
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Biological Properties |
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Cellular Locations | Not Available |
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Biospecimen Locations | |
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Tissue Locations | |
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Pathways | |
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Normal Concentrations |
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Blood | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Normal | | details | Blood | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Normal | | details | Feces | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Normal | | details | Feces | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Normal | | details | Feces | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Normal | | details |
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Abnormal Concentrations |
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Blood | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Colorectal adenoma | | details | Blood | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Colorectal adenoma | | details | Feces | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Colorectal cancer | | details | Feces | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Colorectal Cancer | | details | Feces | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Colorectal cancer | | details | Urine | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Colorectal adenoma | | details | Urine | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Colorectal adenoma | | details |
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Associated Disorders and Diseases |
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Disease References | Colorectal cancer |
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- Brown DG, Rao S, Weir TL, O'Malia J, Bazan M, Brown RJ, Ryan EP: Metabolomics and metabolic pathway networks from human colorectal cancers, adjacent mucosa, and stool. Cancer Metab. 2016 Jun 6;4:11. doi: 10.1186/s40170-016-0151-y. eCollection 2016. [PubMed:27275383 ]
- Sinha R, Ahn J, Sampson JN, Shi J, Yu G, Xiong X, Hayes RB, Goedert JJ: Fecal Microbiota, Fecal Metabolome, and Colorectal Cancer Interrelations. PLoS One. 2016 Mar 25;11(3):e0152126. doi: 10.1371/journal.pone.0152126. eCollection 2016. [PubMed:27015276 ]
- Goedert JJ, Sampson JN, Moore SC, Xiao Q, Xiong X, Hayes RB, Ahn J, Shi J, Sinha R: Fecal metabolomics: assay performance and association with colorectal cancer. Carcinogenesis. 2014 Sep;35(9):2089-96. doi: 10.1093/carcin/bgu131. Epub 2014 Jul 18. [PubMed:25037050 ]
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Associated OMIM IDs | |
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External Links |
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DrugBank ID | Not Available |
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Phenol Explorer Compound ID | Not Available |
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FooDB ID | Not Available |
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KNApSAcK ID | C00034881 |
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Chemspider ID | 558617 |
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KEGG Compound ID | Not Available |
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BioCyc ID | CPD-904 |
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BiGG ID | Not Available |
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Wikipedia Link | Not Available |
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METLIN ID | Not Available |
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PubChem Compound | 643474 |
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PDB ID | Not Available |
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ChEBI ID | 90344 |
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Food Biomarker Ontology | Not Available |
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VMH ID | Not Available |
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MarkerDB ID | Not Available |
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Good Scents ID | Not Available |
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References |
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Synthesis Reference | Not Available |
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Material Safety Data Sheet (MSDS) | Not Available |
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General References | - Servillo L, Giovane A, Balestrieri ML, Bata-Csere A, Cautela D, Castaldo D: Betaines in fruits of Citrus genus plants. J Agric Food Chem. 2011 Sep 14;59(17):9410-6. doi: 10.1021/jf2014815. Epub 2011 Aug 12. [PubMed:21838291 ]
- Elshenawy S, Pinney SE, Stuart T, Doulias PT, Zura G, Parry S, Elovitz MA, Bennett MJ, Bansal A, Strauss JF 3rd, Ischiropoulos H, Simmons RA: The Metabolomic Signature of the Placenta in Spontaneous Preterm Birth. Int J Mol Sci. 2020 Feb 4;21(3). pii: ijms21031043. doi: 10.3390/ijms21031043. [PubMed:32033212 ]
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