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Maternal pheromone in Rattus norvegicus
Behavioral and Neural Biology, 1983A replication was undertaken of the finding that rat pups between 14 and 28 days of age will approach an attractant (maternal pheromone) contained in the excrement of lactating female rats. Preweaning pups from three strains of Rattus norvegicus (hooded PVG/C, Wistar, and Sprague-Dawley) were tested under different apparatus conditions, with different ...
F, Clegg, D I, Williams
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Rattus norvegicus Spermatogenesis Colony-Forming Assays
2023Knowledge gaps persist on signaling pathways and metabolic states in germ cells sufficient to support spermatogenesis independent of a somatic environment. Consequently, methods to culture mammalian stem cells through spermatogenesis in defined systems have not been established.
Karen M, Chapman +3 more
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1967
The second largest autosome has satellites. Two types of X have been described within strains. It may have prominent short arms or none. The Y is polymorphic among strains, acrocentric and the smallest element with positive heteropyknosis or, equal in size to medium-sized autosomal acrocentrics without heteropyknosis.
T. C. Hsu, Kurt Benirschke
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The second largest autosome has satellites. Two types of X have been described within strains. It may have prominent short arms or none. The Y is polymorphic among strains, acrocentric and the smallest element with positive heteropyknosis or, equal in size to medium-sized autosomal acrocentrics without heteropyknosis.
T. C. Hsu, Kurt Benirschke
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Leptospirosis in Rattus norvegicus and Rattus rattus in Israel.
Israel journal of medical sciences, 1982Leptospires were isolated from 21.2% of Rattus norvegicus (the brown rat) and 9.9% of Rattus rattus trapped in a survey of urban and rural areas in Israel. Microagglutination antibodies were found in sera of 9.4 and 8.1% of these rats, respectively. The 191 strains isolated belonged to six serogroups: Leptospira icterohaemorrhagiae (169), L.
I, Lindenbaum, E, Eylan
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2023
Morpho-physiological peculiarities are discussed for Rattus norvegicus Berk. of two populations living under different ecological conditions. Difference in the habitat conditions is shown to result in differentiation of the populations in a number of indices: weight and length of the body, its proportions, relative weight of the viscera, fecundity and ...
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Morpho-physiological peculiarities are discussed for Rattus norvegicus Berk. of two populations living under different ecological conditions. Difference in the habitat conditions is shown to result in differentiation of the populations in a number of indices: weight and length of the body, its proportions, relative weight of the viscera, fecundity and ...
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Rattus norvegicus Berkenhout 1769
Rattus norvegicus Berkenhout, 1769 Brown Rat The invasive R. norvegicus possesses a statewide distribution and can be found in all 64 parishes.Hoffman, Justin D. +3 more
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Paracrystalline Hæmoglobin as a Species Difference between Rattus norvegicus and Rattus rattus
Nature, 1961THE common laboratory white rat is almost always the albino variety of the Norway rat (brown rat, Rattus norvegicus)1,2 and only exceptionally the albino variety of the black rat (Rattus rattus)3. The two species are morphologically similar, which makes it rather difficult to distinguish them.
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