Muscle and Electric Organs 



579 



A 



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.*'. 



B 



W' 





C 



Fig. 214. A, Fibrous actin prepared by polymerization froir. G-actin. Note alignment 

 of filaments giving the appearance of striations. 20,000x. B, Fibrous actin. 30,000x. 

 C, Threads prepared by breaking up rabbit muscle in Waring blendor. 20,000x. Note 

 resemblance of actin threads to the filaments obtained from muscle. From Rosza, Szent- 

 Gyorgi, and Wyckoff.^' 



0. 



■i 



Fig. 215. Electron micrograph of paramyosin filaments extracted from adductor muscle 

 of Venus, stained with phosphotungstic acid. From Schmitt et al.^' 



