G2.12 cDNA cloning of the 76 kDa cell adhesion protein from crayfish blood cells, identification of its receptor and intracellular signalling pathway: Mats W. Johansson1, Matteo Cammarata1,2, Nicoló Parrinello2, Kenneth Söderhäll1 1Dept. of Physiological Botany, University of Uppsala, S-75236 Uppsala, Sweden, 2Inst. of Zoology, University of Palermo, I-90123 Palermo, Italy; and 3Dept. of Medical Entomology, Natl. Inst. of Health, Toyama 1-23-1, Tokyo 162, Japan