After the rat genome sequence was assembled at Baylor, an international team, comprised of more than 20 groups in six countries, conducted a three-way analysis comparing the rat sequence data with similar data from the mouse and the human. In addition to the paper in Nature, the team is publishing an additional 30 papers in the April issue of the journal Genome Research, which describe the analyses in greater detail.
01.10.2006 - Rats and mice are similar in appearance
Most infectious causes of alopecia and dermatitis in mice are associated with fur mites. Generalized thinning of the hair, especially on difficult-to-groom areas such as the head and trunk, is seen. The coat often has a greasy appearance and, in cases of heavy infestation, noticeable pruritus and self-inflicted dermal ulceration may occur. Three mites are commonly seen: , , and . is the most clinically significant mouse mite. Infestations are usually caused by more than one species. Mites are spread by direct contact with infected mice or infested bedding. Diagnosis is based on identification of adult mites, nymphs, or eggs on hair shafts with the use of a hand lens or stereoscopic microscope. Adults and nymphs appear pearly white and elongate; eggs are oval and can be seen attached to the base of hairs or inside mature females. Mite infestations are treated with (0.2 mg/kg, SC or PO, twice at 10-day intervals). Alternatively, a few drops of solution (diluted to 1:100 in equal parts of water and propylene glycol for three treatments) can be placed on the mouse’s head to allow spread by grooming and ingestion.
Mouse vs Rat - Difference and Comparison | Diffen
Sometimes a pet mouse presents with clinical signs of mite infestation but no evidence of mites or known history of recent exposure to other animals. Biopsy samples may be useful in these cases to distinguish active acariasis from dermal hypersensitivity to mites or other allergens such as timber chip bedding. Dermal hypersensitivity is well described in certain inbred strains of mice and is characterized by severe pruritus, the presence of fine dandruff all over the body, and occasionally ulcerative dermatitis.
What's the difference between Mouse and Rat