305,001 PROGRAM Program and abstracts of the Twenty-eighth National Meeting of the Society for Leukocyte Biology, and the Twenty-first Leukocyte Culture Conference, Snowmass at Aspen, Colorado, September 28-October 1, 1991. - New York : Wiley-Liss, Inc., 1991. - 168 s. ; 28 cm (Journal of Leukocyte Biology ISSN 0741-5400 ; suppl. 2)