... alleles may be responsible for the generation of four possible allelic lineages (represented by A, B2, B1,and W ), one of which (W/M) i s r evealed by this work. The high polymorp hism of the ... as2-Casoverlap in the same zone of the gel, the as1-Cas composition of each phenotype was analysed by immunostaining afterTable 1. Primers used in the p resent study. Each pair of primersamplifies the target ... explaining the hetero-geneity of phosphorylation observed for the n ative protein by ES/MS analysis (Fig. 4). Finally, peptide E96QLLR100,diagnostic of the F v ariant, was present among the peptidesidentified...