TWO MODES OF MORPHOLOGICAL CHANGES OF CYST FOUND IN THE BRAIN OF MICE CHRONICALLY INFECTED WITH BEVERLEY STRAIN OF TOXOPLASMA GONDII

Abstract

Two modes of morphological changes of cyst, rupture and budding-like protrusion, were observed in emulsions and microscopic sections of the brain of the mice infected chronically with Beverley strain of Toxoplasma gondii. These changes seem to be related to the formation and the growth of the cyst, and tended to appear more often in the mice injected with cortisone than in those not injected.