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Gap-junction channels (GJCs) communicate the cytoplasm of adjacent cells and are formed by head-to-head association of two hemichannels (HCs), one from each of the neighbouring cells. GJCs mediate electrical and chemical communication between cells, whereas undocked HCs participate in paracrine signalling because of their permeability to molecules such as(More)
Five natural cularines isolated from the aerial parts ofSarcocapnos crassifolia (Fumariaceae) and a cularioid isolated from the bark ofGuatteria ouregou (Annonaceae) were tested for their ability to displace3H-SCH 23 390 and3H-raclopride from their striatal binding sites. Celtisine, breoganine and cularidine were able to inhibit the binding at D-1 and D-2(More)
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