antibodies , specific for delta , cathodal beta , anodal beta and alpha crystallins , were applied to sections through the lens of 2 1/2- , 3- , 3 1/2 , 4- , 5- , 8- and 16-day embryonic and 1-day post-hatch normal and hy-1 chicks . delta crystallin appears precociously in the external layer , and alpha crystallin in the prospective fiber region , of the lens rudiment of hy-1 embryos .
C0023317
lens
C0229224
fiber