Cell volume and DNA content of Trypanosoma lewisi and T. mega in vitro.

Two species of trypanosomes were harvested at a comparable stage in vitro development, just as cell division was ceasing and cell length had become maximal and its variability minimal. At this stage, T. mega displayed both a larger cell volume than T. lewisi (27.5 vs. 14.3 mu-2) and a greater DNA content (0.23 vs. 0.048 pg/cell).