| As long as the supply of methionine is adequate, cysteine is considered as nonessential. |
| Homocysteine is produced from the amino acid methionine, which is found in normal dietary protein. |
| The proteins of soyabean yields all essential amino acids in adequate amounts, except methionine and cystine. |
| Whey proteins are also rich in the sulfur-containing amino acids cysteine and methionine. |
| The sulfur-containing amino acids are methionine, cysteine, cystine, homocysteine, homocystine, and taurine. |
| Simple sugars called polysaccharides and amino acids like methionine and perhaps tannins are probably what they are after by eating the trees. |
