the procedure has been used in conjunction with antibodies against microfilament associated proteins to reveal the arrangement of microfilaments in a rat mammary cell line both in the fully spread state and in cells during the process of spreading on the substratum . use of antibodies to myosin , tropomyosin , alpha-actinin and filamin emphasizes that at early times during the spreading process these proteins are abundantly present underneath the upper plasma membrane , suggesting that the cortical layer present underneath this membrane may be contractile .
C0025978
microfilament
C0027096
myosin