Variations in crypt cell cycle time and mitotic time in the small intestine of the rat.
D000367:Age Factors; D000818:Animals; D002940:Circadian Rhythm; D004847:Epithelial Cells; D004848:Epithelium / Q000254:growth & development; D007421:Intestine, Small / Q000166:cytology*; D008297:Male; D008938:Mitosis; D005082:Physical Exertion; D051381:Rats; D013997:Time Factors