Theileria mutans, 4 isolates obtained from geographically distant parts of South Africa by subinoculation of infected blood were readily transmitted to cattle by Amblyomma hebraeum, all attempts to transmit these isolates with Rhipicephalus appendiculatus were unsuccessful

Babesia bovis, cattle, kinetics of specific indirect fluorescent antibody test titers and total serum IgG and IgM values after vaccination and challenge exposure, nonspecific suppression of total IgG and IgM values coinciding with period of peak parasitemia

Toxoplasma gondii, clinical disease in nonvaccinated dairy goats, protective immunity against clinical toxoplasmosis in dairy goats vaccinated with Hammondia hammondi but not H. heydorni, antibody to T. gondii in vaccinated and challenge exposed goats

Anaplasma marginale, several techniques used to determine effectiveness of stains for demonstrating colonies of Anaplasma in Dermacentor andersoni

Dirofilaria immitis-infected dogs (exper.), cardiopulmonary function before and after period of exercise training, dogs tolerated program without signs of congestive heart failure or further development of pulmonary hypertension

Babesia bigemina infection in population of Boophilus decoloratus cannot be eliminated in short term by treating cattle prophylactically with imidocarb dipropionate, Babesia retained by ticks for at least complete generation

Amblyomma hebraeum, purification procedure used to obtain pure toxic components of tick eggs, characterization of toxin structure, histopathologic lesions observed in guinea pigs inoculated with egg extract or purified toxin, lesions in guinea pigs inoculated with crude egg extracts of 3 other ticks were histopathologically similar

Parafilaria bovicola, general appearance, size, developmental times, and site of development of each larval stage in potential vector flies (Musca xanthomelas and M. lusoria)

Ixodes (Afrixodes) matopi n. sp. is described from females and males collected off twigs bearing deposits of intraspecific communication marks secreted by the pre-orbital glands of the klipspringer Oreotragus oreotragus and from laboratory-reared immature specimens. One female was also found on a goat. The 4 collections were all from Zimbabwe, 3 of them from Matabeleland South Province and the fourth from Inyanga District, Zimbabwe.

Echinococcus multilocularis, dogs and cats (both exper.), efficacy of praziquantel; cats are not as suitable as experimental hosts for this parasite as are dogs