||Herculano-Houzel S, Mota B, Lent R. Cellular scaling rules for rodent brains. Proc Natl Acad Sci U S A. 2006 Aug 8 103(32):12138-43. p.12139 table 1PubMed ID16880386
||"[Researchers] use the isotropic fractionator (16), a nonstereological
method, to determine total numbers of neuronal and nonneuronal cells in the cerebral cortex, cerebellum, and remaining areas of the brain and to examine how they scale across six species of the same order, Rodentia, from mouse to the giant Amazonian capybara."
||"Across the six rodent species [researchers] studied, body mass varies >1,000-fold, from ˜40 g in the mouse to >40 kg in the capybara, whereas brain mass varies by a factor of <200, accompanied by a smaller
increase of 45 times in total number of cells, and an even smaller
22-times increase in the total number of neurons (Table 1)."