11.  People may derive more benefits from an animal companion than from a human one, says a Dutch psychologist.

12.  Platelets stick to it and begin clumping because the bacterial protein resembles a normal human one, collagen, which is involved in the early stages of clotting.

13.  Rat chromosomes only partially mirror human ones in their relationship to physical traits.

14.  Riders must climb steep mountains that can strain an automobile engine, much less a human one.

15.  Rob Kepple, general counsel of the Texas District and County Attorneys Association, said the ruling exemplifies technical issues overriding human ones in appeals decisions.

16.  Such releases, they say, may augment human ones and throw the warming debate into a broader context of natural ups and downs.

17.  The greatest comedy is the human one.

18.  The one driving force behind the quest to transplant animal organs is the great shortage of human ones.

19.  The second problem is a human one.

20.  The rat genetic code is roughly the same size as the human one, with about three billion letters.