cit·rul·line /ˈsɪtrəˌlin/ 氨甲□鳥氨酸; 瓜氨酸
cit·rul·line /ˈsɪtrəˌlɪn; sɪˈtrəlˌɪn, ən/ 名詞
citrulline n : an amino acid that does not occur in proteins but is an intermediate in the conversion of ornithine to arginine