“Stimulation with the proteinases did not alter the PGE2 levels … supernatants from 24-h cultures of PL, however, beta-glucans (100 microg ml(-1)) provoked a large increase in PGE2 levels, … were inhibited after addition of 10 microg ml(-1) of indomethacin , a non-selective inhibitor … COX2 enzymatic activity.”