| blastoma | <tumour> A neoplasm composed chiefly or entirely of immature undifferentiated cells (i.e., blast forms), with little or virtually no stroma. Synonym: blastocytoma, embryonal carcinosarcoma. Origin: blasto-+ G. -oma, tumour (05 Mar 2000) |
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| blastomere | One of the cells produced as the result of cell division, cleavage, in the fertilized egg. (18 Nov 1997) |
| blastomeres | The undifferentiated cells formed by cleavage of the fertilised ovum. This includes cells in the cleavage, morula, and blastula stages of the embryo. (12 Dec 1998) |
| blastomerotomy | Synonym: blastotomy. Origin: blastomere + G. Tome, incision (05 Mar 2000) |
| blastomogenic | Causing or producing a blastoma. (05 Mar 2000) |
| blastomyces | A deuteromycetous fungal genus, a species of which, blastomyces dermatitidis, causes blastomycosis. (12 Dec 1998) |
| Blastomyces dermatitidis | A dimorphic soil fungus that causes blastomycosis. It grows in mammalian tissues as budding cells and in culture as a white to buff-coloured filamentous fungus bearing spherical or ovoid conidia on terminal or lateral short, slender conidiophores. In its perfect (teleomorph) state it is known as Ajellomyces dermatitidis. Origin: blasto-+ G. Mykes, fungus (05 Mar 2000) |
| blastomycetic dermatitis | A cutaneous form of blastomycosis. (05 Mar 2000) |
| blastomycin | An antigen for intradermal testing prepared from sterile filtrates of cultures of the filamentous form of Blastomyces dermatitidis. (05 Mar 2000) |
| blastomycosis | A fungal infection caused by Blastomyces dermatitidis. This rare fungal infection may produce inflammatory lesion of the skin or lungs or present as a disseminated disease to the skin, lungs, bones, liver, spleen and central nervous system. Uncommon unless patient is immunocompromised (AIDS). (27 Sep 1997) |
| blastoneuropore | A temporary opening formed in some embryos by the union of the blastopore and neuropore. Origin: blasto-+ neuropore (05 Mar 2000) |
| blastophore | <biology> That portion of the spermatospore which is not converted into spermatoblasts, but carries them. Origin: Gr. Sprout + to bear. Source: Websters Dictionary (01 Mar 1998) |
| blastopore | During gastrulation cells on the surface of the embryo move into the interior to form the mesoderm and endoderm. The opening formed by this invagination of cells is the blastopore. It is an opening from the archenteron, the primitive gut, to the exterior. In some animals this opening becomes the anus, whilst in others it closes up and the anus opens at the same spot or nearby. In some animals, for example chick, invagination occurs without a true blastopore and the site at which the cells move in (primitive streak) may be termed a virtual blastopore. (18 Nov 1997) |
| blastoporic canal | An obsolete term for primitive pit. (05 Mar 2000) |
| blastosphere | <biology> The hollow globe or sphere formed by the arrangement of the blastomeres on the periphery of an impregnated ovum. See: Illust. Of Invagination. Source: Websters Dictionary (01 Mar 1998) |
Synonyms : Blastomycoses, North American Blastomycosis
| blastocyst |
blastosphere: the blastula of mammals
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| blastocyte |
an undifferentiated embryonic cell
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| blastocytoma |
blastoma: a tumor composed of immature undifferentiated cells
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| blastoderm |
a layer of cells on the inside of the blastula
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| blastodermic vesicle |
blastula: early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs
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| blasto | any of several infections of the skin or mucous membrane caused by Blastomyces |
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| blasto | of or relating to or characteristic of blastomycosis |
| blasto | of or relating to a blastopore |
| blasto | the opening into the archenteron |
| blasto | of or relating to a blastopore |
| blasto | the blastula of mammals |
| blasto | of or relating to a blastula |