The cytosolic free Ca2+ in ectromelia (mousepox) virus stimulated cytotoxic T lymphocytes.

The objective of these studies was to assess the intracellular calcium (Ca2+) signal involved in the activation of ectromelia virus (EV)-specific cytotoxic T lymphocytes (CTL) upon stimulation with EV-sensitized (A20) target cells or concanavalin A (Con A). The CTL originated from mice previously infected with EV. The level of cytosolic Ca2+ in EV-specific CTL was measured using Fluo-3 AM.

Cholera toxin (choleragen)-polymorphonuclear leukocyte interactions: effect on migration in vitro and Fc gamma R-dependent phagocytic and bactericidal activity.

PMNL leukocytosis is a feature common to many types of infectious and inflammatory diseases. How PMNL are recruited to tissues is not yet clear although it is a question that has considerable clinical importance. We investigated the function of PMNL which migrated through an artificial barrier (Chinese hamster ovary (CHO) cells, collagen and nylon cloth membrane) subjected to CT or choleragenoid treatment toward plain medium (the same RPMI in the upper and lower chamber) or medium containing chemotactic factor (fMLP or LPS or ZAS).