the innervation of the male gonad of salamandra salamandra was studied by fluorescence microscopy using the glyoxylic acid method , acetylcholinesterase histochemistry , electron microscopy using glutaraldehyde/osmium tetroxide and chromate/dichromate fixation , and high-performance liquid chromatography ( hplc ) with electrochemical detection of biogenic amines in homogenates of the testicular tissue .
C0039597
male gonad
C1515300
testicular tissue