NPPA and adrenal cortex carcinoma: Its wide expression was shown through immunostaining by the antibody used to purify ANF-RGC to homogeneity from adrenocortical carcinoma and from adrenal cortex with neurons of the ventral horn region of rat spinal cord, cerebellar Purkinje cells, and renal glomerular cells (Ballermann et al., 1988; Marala and Sharma, 1988).