prov:value
| - The pressure tight column may possess a pressurizing apparatus with a gas almost insoluble in water, such as air, helium,nitrogen, or argon, in order to maintain the pressurized state.Among various amino acids, the neutral amino acid is cystine, phenylalanine, threonine, tyrosine, serine, tryptophan, citrulline, isoleucine, leucine, valine, alanine, proline, glutamine, methionine, glycine, or the
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