21.  Now, in negotiations with Time Warner, Holyfield believes he must stand by his earlier demand for ethical reasons.

22.  Others refused for ethical reasons.

23.  Others have refused for ethical reasons.

24.  The company said there were no ethical reasons why similar tests could not be conducted in the United States.

25.  The move was widely regarded in journalism as a brave step taken for ethical reasons.

26.  Those DNA paternity tests so revealing of animal mores cannot, for ethical reasons, be applied to human populations.

27.  WHO, a U.N. agency, has cited ethical reasons for insisting that AIDS vaccine trials must be conducted in the country where the product was developed.

28.  A medical consultant, who refused to disclose his name for ethical reasons, said some patients turned away would likely die at home without treatment.

29.  Amnon Sela, one of the professors who signed the letter, said he and his colleagues take issue with Netanyahu for ethical reasons.

30.  Companies that adopted such programs at home for ethical reasons have also found that diversity makes good business sense.