these studies have also led to the detection of a protein in crude extracts of hela cells and in cycled hela microtubules which has been identified as map-2 on the basis of ( a ) comigration with calf brain map-2 on sds page , ( b ) presence in purified microtubules , ( c ) heat stability , and ( d ) reaction with two types of antibodies prepared against neural high molecular weight-maps , one of these a monoclonal antibody against hog brain map-2 , although present in hela cells , is at all stages of microtubule purification a relatively minor component in comparison to the 200,000 hela map 's .
C0026045
maps
C0026046
microtubule