Fig. 4. Control experiments for immunogold labeling of CDP II in the ultrathin
sections of hyphal apices of Allomyces arbuscula. (A,B) The
incubation mixture was stripped-off for CDP-II-specific antibodies by
pre-incubation with purified antigen at antibody-antigen ratio of 1:0.8 and
1:1 ratio respectively. (C) Pre-immune serum was used as primary antibody.