Fig. 6. Proteins from Manduca retina. (A) SDS-PAGE electrophoresis of aliquot parts of retinal homogenate equivalent to 0.1 retina, calibrated with molecular masses of Bio-Rad protein standards. (B,C,D) Western blots with antisera against P520, P450 and P357, respectively, showing a major band at approximately 37 kDa. (E) Control blot lacking primary antibodies.