Triggering through CD16 or phorbol esters enhances adhesion of NK cells to laminin via very late antigen 6

were gifts from Dr. C. E. Klein (Department of Dermatology, University of Ulm Oberer Eselsberg, Germany) and Dr. P. G. Natali (Cancer Institute, Regina Elena, Rome, Italy), respectively; antiVLA-1 was purchased from T Cell Sciences Inc. (Cambridge, MA); anti-cat was from Telios Pharmaceuticals Inc. (San Diego, CA); and anti-CD16 (B73 .1 and 3G8) and anti-MHC I (W6/32), were kindly provided by Dr. G. Trinchieri (Wistar Institute, Philadelphia, PA). The following rat mAb were used : GoH3 (9), specific for the a6, was a gift from Dr. A. Sonnenberg (Laboratory of the Netherlands Red Cross, AD, Amsterdam) ; and 439-9B (15) (anti-04) was kindly provided by Dr. A. Sacchi (Cancer Institute, Regina Elena) . A goat antiserum against the 01 subunit was provided by Dr. G. Tarone (University of Turin, Italy) (16) .