INTERACTION OF COLLAGEN M AC ROMOLEC U LES 



23 



Fig. 2. Band patterns of SLS-type aggregates obtained by addition of ATP 

 to an acid solution of calfskin collagen. In this ordered form, the TC macro- 

 molecules are packed in "parallel array," with like ends in register, and their 

 orientation is indicated by the arrows with ends labeled A and B. (a) Stained 

 with PTA. (b) Stained with cationic uranium. X60,000. (From Hodge and 

 Schmitt, 1960.) 



A ^ 



«B 



it . • 





V. 



Fig. 3. SLS-type aggregates, showing the close correspondence in the 

 location of staining loci in the two "fingerprints" despite considerable differ- 

 ences in staining intensities, (a) Stained with PTA. (b) Stained with cationic 

 uranium. X220,O0O. (From Hodge and Schmitt, 1960.) 



