EntityQ5299987· pop 7· linked from 11 articlesdouble coneSign in to savecell typeConnectionsbirdEntityfishEntitycolorEntitycellEntityReptiliaEntityVertebrataEntityplatypusEntitydigital object identifierEntitywavelengthEntitymonotremeEntitySiluriformesEntityQ180686EntityPlacentaliaEntitybibcodeEntitypolarizationEntityQ229883EntityElasmobranchsEntitycone cellEntityUniversity of QueenslandEntityluminanceEntityCategoriesPhotoreceptor cells