EFFECTS OF MEDIA WITH LOW SILICIC ACID CONCENTRATIONS ON TOOTH FORMATION INACARTIA TONSADANA (COPEPODA, CALANOIDA)
نویسندگان
چکیده
منابع مشابه
The Preparation of Silicic Acid Jellies for Bacteriological Media.
Although silicic acid jellies are inferior to agar, gelatin, blood serum or egg white in the preparation of solid media for the majority of bacteriological requirements, there are certain specialized purposes, such as the isolation of autotrophic bacteria, for which an inorganic jelly is necessary. Theoretical advantages from the utilization of silica gel as a specialized substitute for organic...
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Although silicon is a constituent of normal animal tissues, silicic acid formed by the dissolution of inhaled quartz particles can induce the formation of pathological lesions in which the normal tissue is replaced by fibrotic tissue arranged concentrically around the silica particles. The mechanism of the change which constitutes the disease, silicosis, is unknown. Schulman & Rideal (1937) dem...
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An interesting α-amylase has been obtained in large quantity (2400 U/g of body weight) with specific activity (20.22 U/g protein) from a freshwater zooplankton, Heliodiaptomus viduus (Gurney). Partially purified enzyme showed activity up to 70 oC and demonstrated optimum activity at 30 oC. The enzyme was active between pH 3.5 and 8.5, with maximum activity at pH 6.0. It retained its full activi...
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ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1980
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1541099