Quercus prinoides var. "prinoides". The dwarf chinkapin oak is a shrub or small tree that typically only grows to 13–20 feet (4–6 meters) tall and 13–20 feet (4–6 meters) wide. It sometimes spreads vegetatively by means of underground rhizomes. The leaves of dwarf chinkapin oak closely resemble those of chinkapin oak, although they are smaller: 2-6 inches (5–15 cm) long, compared to 4-7 inches (10–18 cm) long for chinkapin oak. The acorns are 1/2 to 1 inches (15–25 mm) long, with the cup enclosing about half of the acorn. While similar in foliage and fruits, but with smaller leaves, the dwarf chinkapin
Hair follicle to the DNA damage in the hair follicle stem cells. Proteolysis of collagen leads to elimination of the damaged cells and then to terminal hair follicle miniaturization. Hair grows in cycles of various phases: anagen is the growth phase; catagen is the involuting or regressing phase; and telogen, the resting or quiescent phase (names derived using the Greek prefixes ana-, kata-, and telos- meaning up, down, and end respectively). Each phase has several morphologically and histologically distinguishable sub-phases. Prior to the start of cycling is a phase of follicular morphogenesis (formation of the follicle). There is also a shedding phase,