Use Hangouts to keep in touch. Message friends, start free video or voice calls, and hop on a conversation with one person or a group. â¢ Send and receive both Hangouts and text messages (SMS/MMS). â¢ Include all your friends with group chats for up to 150 people.
Melanosis coli is a condition usually associated with chronic laxative use in which dark pigment is deposited in the lamina propria (one of the lining layers) of the large intestine (colon). The pigment deposition results in a characteristic dark brown to black discoloration of the lining of the large intestine.
General Information About Melanoma. Melanoma is a malignant tumor of melanocytes, which are the cells that make the pigment melanin and are derived from the neural crest. Although most melanomas arise in the skin, they may also arise from mucosal surfaces or at other sites to which neural crest cells migrate, including the uveal tract.