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PROBLEM: Perforin (P) is a cytolytic molecule located in intracellular granules of cytotoxic lymphocytes both in the peripheral blood and decidua of pregnancy. The aim was to analyze the kinetics of P expression during in vitroculture and modulation of P expression by adherent cells, their supernatants and mitogen (PHA) stimulation.

PROBLEM: We have shown that addition of decidual adherent cells (DAC) to the culture of decidual lymphocytes (DL) prevents the downregulation of perforin expression in these cells. Because DAC are a mixture of various cell populations, the aim is to analyze immunophenotypic characteristics of DAC and to determine which cell population is involved in the regulation of perforin expression.

Laskarin G, Faust Zs, Štrbo N, SotoŠek V, Szekeres‐Bartho J, Podack ER, Rukavina D. Progesterone directly and indirectly affects perforin expression in cytolytic cells. AJRI 1999; 42:312–320© Munksgaard, Copenhagen