Progress in Clinical Parasitology

This volume, now the third in a series, presents a more hetero­ geneous content than previous issues. It covers two previously rare but now common opportunistic infections in the United States, a common parasitic disease in Japan, exciting but difficult problems in developing a malarial vaccine, a study exemplifying the role of T­ lymphocytes in parasitic infections, and a fascinating review of the relationship between the schistosomes and their molluscan hosts. The first chapter covers crypto