leukotriene b4 ( 5 ( s ) ,12 ( r ) -di-hydroxy-eicosa-6,14-cis-8,10-trans-tetraenoic acid [ ltb4 ] ) is a product of the 5-lipoxygenation of arachidonic acid , which elicits human pmn leukocyte chemotactic responses in vitro that are 50 % of the maximal level at concentrations of 3 x 10 ( -9 ) m to 10 ( -8 ) m and are maximal at 2 x 10 ( -8 ) m to 10 ( -7 ) m .
C3538902
di
C0086418
human