2001n-232 analysis cellsurfacereceptors cellularcontrolmechanisms cellularsignaltransduction congresses cyclicadenylicacid cyclicamp cyclicamp-dependentproteinkinases drugdevelopment enzymes exercise genetics laboratorymanuals membraneproteins metabolism muscles myocardium neoplasms neoplasticprocesses pharmaceuticalindustry phosphoproteinphosphatases phosphoproteins phosphorylation physiologicalaspects physiology proteins qu25p96662001 qu55n85652001 qu55r4521993 secondmessengersystems signaltransduction therapy tumors we103e9551995