Effects of fish oil on domain size and residence time of prostaglandin F2α receptors in the presence of ligand on bovine luteal cells. (A) Residence time of prostaglandin F2α (FP) receptors and (B) microdomain diameter on bovine luteal control, 0.03% (vol/vol) fish oil, or 10-mM beta-methylcyclodextrin–(β-MCD) in the presence of 10-nM prostaglandin F2α. Fish oil 0.03% (vol/vol). Ten mM of β-MCD. a, b control cells—means with different letters differ (P < 0.05) when compared to 0 min. A,B β-MCD cells—means with different letters differ (P < 0.05) when compared to 0 min. Number of receptors analyzed at each time point. Control (n = 80, 52, 31, and 14 FP receptors, respectively), fish oil 0.03% (vol/vol; n = 86, 48, 57, and 32 FP receptors, respectively), and 10-mM β-MCD (n = 35, 26, 22, and 9 FP receptors, respectively).