Stem cells are characterized by their ability to self-renew and to produce numerous differentiated cell types, and are directly responsible for generating and maintaining tissues and organs.

He was shivering a little, for he had always been used to sleeping in a proper bed, and by this time his coat had worn so thin and threadbare from hugging that it was no longer any protection to him.

But the civilising was so complete that the survivors of the original inhabitants numbered seven, of whom two were dying of consumption in the Native Compound, three confined in the Native Lazaret with leprosy, the rest, a man and a woman, living in a gunyah at the remote end of Devilfish Bay, subsisting on what food they could get from the bush and the sea and what they could buy with the pennies the man earned by doing odd jobs and the woman by prostitution.

countenance sublime and insolent