very very very low resolution image: Klymkowsky & Stroud. 1979. Immunospecific identification and three-dimensional structure of a membrane-bound acetycholine resceptor from Torpedo california. J. Mol. Biol.

high resolution structure from: Rahman et al., 2020. Structure of the native muscle-type nicotinic receptor and inhibition by snake venoms. Neuson.

Clouds, now & then, giving relief from constant  moon-viewing - Bashò

added - 3 December 2020