| Other changes include a laxity of the joints, which ultimately may assist labour and birth, and increased brown pigmentation of the skin. |
| This is characterized by the appearance of wrinkles, dry, inelastic leathery skin and irregular pigmentation. |
| Prior clinical reports have suggested that exogenously administered alpha or beta melanocyte-stimulating hormone can increase skin pigmentation. |
| Previous studies in multiple plant species have shown an association of both pigmentation and hairiness with cool temperatures. |
| For instance, plants grew leaves with new shapes, had different pigmentation, or hairy roots. |
| After a prolonged period of dark growth, light irradiation does not elicit pigmentation. |
