Changes in the blood picture of white mice experimentally infected with various species of ascarids.

The blood picture was studied in white mice experimentally infected with Ascaris suum, Toxocara cati, and Toxascaris leonina. In mice infected with A. suum, maximum number (17%) of eosinophiles occurred on day 28 p.i. In mice infected with T. cati, the eosinophilia increased already from the first day after infection, reaching the maximum (26%) on day 21 p.i. In mice infected with T. leonina, the eosinophilia increased from day 7 to day 28 p.i. and a slightly increased number of eosinophiles persisted during the whole experiment.