electron microscopic and morphometric evaluation of the juxtaglomerular apparatus ( jga ) of the human kidney showed the following : ( 1 ) the jga of the human kidney consists of the epithelioid cells of afferent and efferent arterioles , the goormaghtigh cells , and the macula densa , and it is abundantly supplied with sympathetic nerves .
C0022445
jga
C0022646
kidney