A deep (systemic) mycotic infection caused by dimorphic fungi. North American Blastomycosis caused by Blastomyces dermatitidis in N. America and tropical Africa while Paracoccidioides braziliensis causes S. American Blastomycosis in South America.... blastomycosis
n. the fluid-filled cavity that develops within the *blastocyst. The cavity increases the surface area of the embryo and thus improves its ability to absorb nutrients and oxygen.... blastocoele
n. any of the cells produced by *cleavage of the zygote, comprising the earliest stages of embryonic development until the formation of the *blastocyst. Blastomeres divide repeatedly without growth and so decrease in size.... blastomere
n. the opening that forms as a result of invagination of the surface layer of the early embryo (*gastrula). It is very much reduced in humans, in which it gives rise to the archenteric canal (see archenteron).... blastopore
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