horizontal two-dimensional electrophoresis , using ph 4-7 and ph 7-10 immobilised ph gradient gels in the first dimension , was applied to the analysis of protein samples from skin fibroblasts and muscle myoblasts dual-labelled synthetically with [ 35s ] methionine and [ 75se ] selenomethionine in an attempt to identify sets of proteins specific to each cell type .
C0025646
methionine
C0036584
selenomethionine