| polkissen of Zimmermann | Synonym: extraglomerular mesangium. Origin: Ger. Polkissen, pole + cushion (05 Mar 2000) |
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| Zimmermann, Karl | <person> German histologist, 1861-1935. See: Zimmermann's corpuscle, Zimmermann's granule, Zimmermann's elementary particle, polkissen of Zimmermann. (05 Mar 2000) |
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| Zimmermann reaction | A chemical reaction between an alkaline solution of meta-dinitrobenzene and an active methylene group (carbon-16) of 17-ketosteroids; it is the basis of the 17-ketosteroid assay t.; more generally, a reaction between methylene ketones and aromatic polynitro compounds in alkaline solutions. Synonym: Zimmermann test. (05 Mar 2000) |
| Zimmermann's corpuscle | <haematology> A discoid cell (3m diameter) found in large numbers in blood, important for blood coagulation and for haemostasis by repairing breaches (small breaks) in the walls of blood vessels. Platelet _ granules contain lysosomal enzymes, dense granules contain ADP (a potent platelet aggregating factor) and serotonin (a vasoactive amine). They also release platelet-derived growth factor which presumably contributes to later repair processes by stimulating fibroblast proliferation. Synonym: thrombocytes. (09 Oct 1997) |
| Zimmermann's elementary particle | <haematology> A discoid cell (3m diameter) found in large numbers in blood, important for blood coagulation and for haemostasis by repairing breaches (small breaks) in the walls of blood vessels. Platelet _ granules contain lysosomal enzymes, dense granules contain ADP (a potent platelet aggregating factor) and serotonin (a vasoactive amine). They also release platelet-derived growth factor which presumably contributes to later repair processes by stimulating fibroblast proliferation. Synonym: thrombocytes. (09 Oct 1997) |
| Zimmermann's granule | <haematology> A discoid cell (3m diameter) found in large numbers in blood, important for blood coagulation and for haemostasis by repairing breaches (small breaks) in the walls of blood vessels. Platelet _ granules contain lysosomal enzymes, dense granules contain ADP (a potent platelet aggregating factor) and serotonin (a vasoactive amine). They also release platelet-derived growth factor which presumably contributes to later repair processes by stimulating fibroblast proliferation. Synonym: thrombocytes. (09 Oct 1997) |
| Zimmermann test | A chemical reaction between an alkaline solution of meta-dinitrobenzene and an active methylene group (carbon-16) of 17-ketosteroids; it is the basis of the 17-ketosteroid assay t.; more generally, a reaction between methylene ketones and aromatic polynitro compounds in alkaline solutions. Synonym: Zimmermann test. (05 Mar 2000) |
| Zimmermann, Wilhelm | <person> German physician, *1910. See: Zimmermann reaction, Zimmermann test. (05 Mar 2000) |