Fig. 8From: Evolution of vertebrate nicotinic acetylcholine receptorsAnalysis of the evolutionary history of the nAChR family with chromosomal location of the nAChR genes and their neighboring gene families in zebrafish, medaka, stickleback and fugu. Crosses indicate gene loss or gene not yet identified. Species illustrations are re-used with permission from Daniel Ocampo Daza, source: www.egosumdaniel.seBack to article page