| skipped generation | A phenomenon of pedigrees in which a gene is transmitted from one affected person to another through a phenotypically unaffected person, as by recessivity (especially for X-linked traits), epistasis, variable expressivity, or absence of an environmental challenge such as a toxin. Except at a crass phenotypic level (e.g., clinical or commercial) this term becomes progressively less useful as the mechanisms are elucidated. (05 Mar 2000) |
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| even skipped | <genetics> A pair rule gene of Drosophila. (18 Nov 1997) |
| biochemical metastasis | The transportation and induction of abnormal immunochemical specificities in apparently normal organs. (05 Mar 2000) |
| calcareous metastasis | The deposit of calcareous material in remote tissues in the event of extensive resorption of osseous tissue in caries, malignant neoplasms, and so on. (05 Mar 2000) |
| metastasis | 1. <cell biology, oncology> The transfer of disease from one organ or part to another not directly connected with it. It may be due either to the transfer of pathogenic microorganisms (for example, tubercle bacilli) or to transfer of cells, as in malignant tumours. The capacity to metastasize is a characteristic of all malignant tumours. 2. Pleural: metastases. A growth of pathogenic microorganisms or of abnormal cells distant from the site primarily involved by the morbid process. Origin: Gr. Stasis = stand, stoppage (12 Nov 1997) |
| haematogenous metastasis | See: metastasis. (05 Mar 2000) |
| satellite metastasis | Metastasis within the immediate vicinity of a primary malignant neoplasm; e.g., skin adjacent to a melanoma. (05 Mar 2000) |
| neoplasm metastasis | The transfer of a neoplasm from one organ or part of the body to another remote from the primary site. The ability to metastasize is characteristic of all malignant neoplasms. (12 Dec 1998) |
| lymphatic metastasis | Transfer of a neoplasm from its primary site to lymph nodes or to distant parts of the body by way of the lymphatic system. (12 Dec 1998) |
| lymphogenous metastasis | See: metastasis. (05 Mar 2000) |