Why twenty amino acid residue types suffice(d) to support all living systems Robert P Bywater 10779/crick.12593753.v1 https://crick.figshare.com/articles/journal_contribution/Why_twenty_amino_acid_residue_types_suffice_d_to_support_all_living_systems/12593753 No description supplied 2020-07-01 11:03:48 Taylor, W FC001179 General Science & Technology