Documents Intestinal Epithelial Cells Regulators of Barrier Function and Immune Homeostasis

Specialized epithelial cells constitute barrier surfaces that separate mammalian hosts from the external environ- ment. The gastrointestinal tract is the largest of these…

Documents Macroevolution: the origin of new taxonomic groups Speciation: the origin of new species 1-...

Macroevolution: the origin of new taxonomic groups Speciation: the origin of new species 1- Anagenesis (phyletic evolution): accumulation of heritable changes â evolution…