DescriptionRetinol3D ball.png English: Retinol or Vitamin A 3D space model (balls model). Date 18 January 2010 Source Own work Author GYassineMrabetTalk✉
from https://en.wikipedia.org/wiki/File:Retinol_3D_balls.png File:Cholecalciferol-vitamin-D3-from-xtal-3D-balls.png Date 11 May 2022 Source Own work Author