2)endocrine pancreas( pancreas islet) 170.000-200.000. constitute about 1% of total pancreas volume 75-500um HE: cells arranged into cord with ct rich in fenestrated cap2) endocrine pancreas( pancreas islet) ---170.000-200.000, constitute about 1% of total pancreas volume ---75-500 um ---HE: cells arranged into cord with CT rich in fenestrated cap