Lab Rat

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A popular term for a graduate student or ‘post-doc’ whose focus on bench research virtually excludes personal and familial relationships
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Differences in VIP projections from the SCN to ORX neurons may contribute to species differences in the regulation of the sleep wake cycle: whereas in grass rats regulation may be in part mediated by direct projections from the SCN to areas involved in arousal, in the nocturnal lab rat this regulation may involve an indirect pathway that connects the SCN to neurons in the lateral and posterior hypothalamus.
Last year, Metcalfe's group reported finding other natural and synthetic estrogens in municipal wastewater at concentrations sufficient to alter the reproductive development of medaka, a fish that's an aquatic analog of the lab rat (SN: 6/17/00, p.
The researchers then performed experiments on Xenopus laevis frogs--the African species that serves as the amphibian analog of a lab rat.
A lab mouse weighs just 18 grams; a lab rat is a much heftier 300 grams.
Results of those tests show lab rats that received the cardiosphere-derived cells:
The study on lab rats, carried out by a team of researchers from the University of California, Los Angeles (UCLA), reveals that dendrites are electrically active in animals that are moving around freely and that these structures generate nearly 10 times more spikes than somas.