Intestinal stem cells at the bottom of crypts fuel the rapid renewal of the different cell types
that constitute a multitasking tissue. The intestinal epithelium facilitates selective uptake of …

The intestinal epithelium is the fastest renewing tissue in mammals and has a large flexibility
to adapt to different types of damage. Lgr5+ crypt base columnar (CBC) cells act as stem …

Evolutionary biologists often use phenotypic differences between species and between
individuals to gain an understanding of organismal design. The focus of much recent …

For more than 200 years, the metabolic response that accompanies meal digestion has
been characterized, theorized, and experimentally studied. Historically labeled “specific …

Biologists have developed a wide range of morphological, biochemical and physiological
metrics to assess the health and, in particular, the energetic status of individual animals …

▪ Abstract The ability of animals to survive food deprivation is clearly of considerable survival
value. Unsurprisingly, therefore, all animals exhibit adaptive biochemical and physiological …

Far from the line drawings and black-and-white photos of the past, Infectious Diseases and
Pathology of Reptiles features high-quality, color photos of normal anatomy and histology …

Organ structures and correlated metabolic features (eg metabolic rate) have often taken as
fixed attributes of fully grown individual vertebrates. When measurements of these attributes …

Why are sustained energy budgets of humans and other vertebrates limited to not more than
about seven times resting metabolic rate? The answer to this question has potential …

Energy storage is an important component of life-history variation. Some organisms ("
income breeders") fuel reproductive expenditure by simultaneous feeding, whereas others (" …