The antibody dilemma.
D000595:Amino Acid Sequence; D000906:Antibodies; D000917:Antibody Formation; D003434:Crossing Over, Genetic; D004247:DNA; D004352:Drug Resistance, Microbial; D007109:Immunity; D008967:Molecular Biology; D012333:RNA, Messenger; D013045:Species Specificity
D000906:Antibodies; D012333:RNA, Messenger; D004247:DNA