Rowan AD, Buttle DJ, Barrett AJ (November 1988). "Ananain: a novel cysteine proteinase found in pineapple stem". Archives of Biochemistry and Biophysics. 267 (1): 262–70. doi:10.1016/0003-9861(88)90031-8. PMID3196029.
nih.gov
pubmed.ncbi.nlm.nih.gov
Rowan AD, Buttle DJ, Barrett AJ (November 1988). "Ananain: a novel cysteine proteinase found in pineapple stem". Archives of Biochemistry and Biophysics. 267 (1): 262–70. doi:10.1016/0003-9861(88)90031-8. PMID3196029.