Figure 3
From: Temperature and species-dependent regulation of browning in retrobulbar fat

Histologic analysis of orbital fat from different species reveals that brown fat is present in rodent species, but not the other mammals examined. (A) H&E stained section of CD1 mouse orbital fat demonstrates a mixture of cells with small lipid vacuoles interspersed with cells with large, single lipid vacuoles. (B) H&E stained section of hamster orbital fat reveals the presence of adipose cells containing multiple small lipid vacuoles. (C) H&E stained section of cat orbital adipose tissue reveals cells with large lipid vacuoles. (D) H&E stained section of dog orbital fat reveals cells with large lipid vacuoles. (E) H&E stained section of lamb orbital fat reveals cells with large lipid vacuoles. (F) H&E stained section of goat orbital adipose tissue reveals cells with large lipid vacuoles. Scale bars = 50 μm.