tritc-phalloidin staining of the isolated caps demonstrated the presence of f-actin within these structures , and lectin-affinity staining after fractionation on sds polyacrylamide gels revealed the presence of a concanavalin a ( con a ) binding protein of relative molecular weight ( mr ) 205,000 , gp205 , in both the l-c antigen and lsgp caps , but absent from the detergent-insoluble residue isolated from unchallenged cells .
C1180307
f-actin
C0007634
cells