142
Figure 20. Acrylamide gel electrophoresis in sodium dodecyl sulfate
of extensively reduced precipitates of bluegill spleen and thymus mem
brane immunoglobulins. Open circles = precipitated with rabbit anti
serum to bluegill serum immunoglobulin. Closed circles = precipitated
with normal rabbit serum. H = position of shark heavy (y) chain. L =
position of shark light chain.