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. 2010 Mar 17;23(3):394–403. doi: 10.1111/j.1755-148X.2010.00696.x

Figure 1.

Figure 1

Epidermal melanocytes (EM) and keratinocytes (K) produce prostaglandin-E2 (PGE2) under basal and arachidonic acid (AA) stimulated conditions. (A) AA (3 μM) incubation for 24 h increased PGE2 production from basal levels in all 10 primary EM cultures and 1 primary K culture. (B) EM data shown in figure (A) pooled by skin phototype. B (basal conditions), AA (3 μM AA for 24 h), SPT (skin phototype). Cell cultures: M20, 23, 24, 29, 37, 40, 42, 45, 48, 50 and K. Error bars expressed as mean ± SEM: (A) n = 3, (B) n = 15. P < 0.01 = **, P < 0.001 = ***.