since very little is known about the effects of retinoids on bacteria , in the present study we investigated the influence of 4 retinoids ( isotretinoin , etretinate , arotinoid ethyl ester , arotinoid sulfone ) in 15 different concentrations on the growth of 10 gram-positive and gram-negative bacteria in vitro and on their susceptibility to 10 antibiotics .
C0035339
retinoids
C0022265
isotretinoin