Pinocytosis of diphtheria toxin by different types of human cells culturedin vitro

The uptake of purified diphtheria toxin by two different kinds of human cells culturedin vitro (human adult hepatocytes and HEp-2 cell cultures) was studied by observations in fluorescence microscopy. Both these cell cultures rapidly take up diphtheria toxin by pinocytosis, a process fully similar to that involved in the uptake of this same toxin by… CONTINUE READING