Fig 6. Immunocytochemistry of amelogenins in the first molar tooth germ of mice raised in either night-deprived or daylight-deprived conditions (D3) as well as mice experienced three day circadian rhythm derivation followed by one day-night cycle (D4) (n = 6 in each group).

A, microphotograph with 10x objective; B, microphotograph with 40x objective. Scale bar, 10μm. Labels in photos: A, ameloblast; I, inner enamel epithelium; M, mineralization layer; P, dental papilla cell; O, odontoblast.