Progesterone acts distally to the initial steps of T cell receptor ( TCR ) -mediated signal transduction , since it blocks sustained Ca2+ signals after thapsigargin stimulation , as well as oscillatory Ca2+ signals , but not the Ca2+ transient after TCR stimulation .
progesterone acts distally to the initial steps of t cell receptor ( tcr ) -mediated signal transduction , since it blocks sustained ca2+ signals after thapsigargin stimulation , as well as oscillatory ca2+ signals , but not the ca2+ transient after tcr stimulation .
B-lipid O O O O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O B-protein_family_or_group O O O O O O O O O B-atom O O B-other_organic_compound O O O O O O B-atom O O O O O B-atom O O B-protein_family_or_group O O