منابع مشابه
Modern ways of feeding laboratory animals.
There is a trend in the feeding habits of biologists-that is, in the way they feed their animals, not themselves-going back some 20 or 30 years. It starts with the homely methods of pet-keeping: for mice, bread soaked in milk with a handful of oats and an occasional lettuce or dandelion leaf; through the preparation of sticky mashes of various kinds, with or without supplements; the offering of...
متن کاملEarly modern experimentation on live animals.
Starting from the works by Aselli (De lactibus sive lacteis venis, 1627) on the milky veins and Harvey (1628, translated in 1993) on the motion of the heart and the circulation of the blood, the practice of vivisection witnessed a resurgence in the early modern period. I discuss some of the most notable cases in the century spanning from Aselli's work to the investigations of fluid pressure in ...
متن کاملConserving and managing animals that learn socially and share cultures.
Socially learned behavior can be a crucial factor in how animals interact with their environment and, thus, in conservation and management. For species in which social learning and culture are important determinants of behavior, several factors complicate conservation and management. These include the rapid spread of novel behavior through social learning, the inhibition of adaptive behavior be...
متن کاملOf early animals, anaerobic mitochondria, and a modern sponge.
The origin and early evolution of animals marks an important event in life's history. This event is historically associated with an important variable in Earth history - oxygen. One view has it that an increase in oceanic oxygen levels at the end of the Neoproterozoic Era (roughly 600 million years ago) allowed animals to become large and leave fossils. How important was oxygen for the process ...
متن کاملMultiplication of Tubercle Bacilli within Mononuclear Phagocytes in Tissue Cultures Derived from Normal Animals and Animals Vaccinated with Bcg
When monocytes derived from normal guinea pigs or rabbits were infected with tubercle bacilli and cultivated in vitro, the bacilli multiplied abundantly within the cytoplasm of these cells. By contrast, intracellular multiplication of the bacilli was retarded or completely inhibited within the monocytes of rabbits or guinea pigs vaccinated with BCG. This inhibition of growth was observed with b...
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ژورنال
عنوان ژورنال: Revista Brasileira de Educação
سال: 2002
ISSN: 1413-2478
DOI: 10.1590/s1413-24782002000200014