JG cells (juxta glomerular apparatus) are

INDERBIR SINGH&;S TEXTBOOK OF HUMAN HISTOLOGY-PAGE NO:313Juxtaglomerular cells the muscle cells in the wall of the afferent aerioles are modified.they are large and rounded(epithelium)and have spherical nuclei. their cytoplasm contains granules that can be stained with special methods. these are called juxtaglomerular cells