Fig. 3

Representative pictures of zebrafish embryos at 72 hpf injected with: a Aminophylline; b Caffeine; c Diprophylline; d Doxofylline; e Etophylline; f IBMX; g Pentoxifylline; h Theophylline; i Dichloroaniline (positive control); and j Sterile water (negative control). The zebrafish embryos representative pictures were obtained with Leica MZ16F stereomicroscope(Germany) equipped with DFC 480 digital camera and LAS Leica Imaging software (Leica).Magnification 40X