There are two types of [Ca.sup.2+] channels on the plasma membranes of vascular smooth muscle cells: receptor-operated [Ca.sup.2+] channels (
ROCCs) and voltage-dependent [Ca.sup.2+] channels (VDCCs) (Xiong and Sperelakis, 1995).
In the future she plans to become one of Ovacome's team of
ROCCs - Regional Ovarian Cancer Co-ordinators, providing support for sufferers.
It is well known that the maintenance of smooth muscle contraction depends upon [Ca.sup.2+] entry from extracellular space through voltage- and/or receptor-operated calcium channels (VOCCs and/or
ROCCs, respectively) (Nelson et al., 1990; Karaki and Weiss, 1988).