Lucy Graves Taliaferro

Asexual Reproduction of Plasmodium Knowlesi in Rhesus Monkeys

and original work, the reader is referred to the publications by Sinton and Mulligan (1933a and b) and Sinton (1934). Later, Afridi (1938) observed that the proportion of 2 broods in a given infection may be different before and after the parasite decline; that segmenters, including crisis forms, first appear during the parasite decline; that the asexual cycle may be irregular; and that seg-

Effect of 5-Bromodeoxyuridine on the Hemolysin Response in Rabbits.∗:

Summary The analogue, 5-bromodeoxyuri-dine, when injected intraperitoneally within an hour and a half of an intravenous injection of sheep red blood cells, produced an unequivocal adjuvant effect on the hemolysin response in unirradiated rabbits as gauged by high peak titer. It was, however, ineffective when injected 2 days after the sheep red cells into unirradiated rabbits and did not modify X-ray-induced enhancement or depression when it and the antigen were injected one day before and one day after 400 R, respectively.