... wereexclusively heterozygous M/F a t the as1-Cas locus. There-fore, analysis o f their transcripts could have been ratherdifficult because of the occurrence of at least nine differentforms of messenger ... [27]. Unfortunately, we could not obtainenough material to synthesize cDNA. However, as expectedfrom the phen otypic analysis (at the p rotein level), the f ewanimals yielding in their milk the ... explaining the hetero-geneity of phosphorylation observed for the n ative proteinby ES/MS analysis (Fig. 4). Finally, peptide E96QLLR100,diagnostic of the F v ariant, was present among the peptidesidentified...