| Fischer |
German chemist noted for his synthesis of hemin (1881-1945) German chemist noted for work on synthetic sugars and the purines (1852-1919) United States chess master; world champion from 1972 to 1975 (born in 1943)
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| finger spelling |
an alphabet of manual signs
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| fixative |
a compound (such as ethanol or formaldehyde) that fixes tissues and cells for microscopic study a varnish dissolved in alcohol and sprayed over pictures to prevent smudging
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| fibrin |
a white insoluble fibrous protein formed by the action of thrombin on fibrinogen when blood clots; it forms a network that traps red cells and platelets
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| fissiparity |
reproduction of some multicellular organisms by division, as in the case of some starfish the tendency to break into parts; "the fissiparity of religious sects"
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