Fig. 5From: Entropy based analysis of vertebrate sperm protamines sequences: evidence of potential dityrosine and cysteine-tyrosine cross-linking in sperm protaminesArginine-Lysine Frequencies for Protamine Groups. Box plots of the arginine-lysine frequency for eutherian protamine P1, processed eutherian P2, metatherian P1, and fish protamines. Individual arginine-lysine frequencies are plotted next to the associated box plot. For min, quartile, and max data see Table 1Back to article page