... permission.—Cultures of Photobacterium NZ-11 glowing in petri dishes, photograph. © RogerRessmeyer/Corbis. Reproduced by permission.—Darwin,Charles, photograph. Popperfoto/Archive Photos. © ArchivePhotos, Inc. ... travel to the receptor sites found in the salivary and tearglands and in the stomach’s mucosal lining. H2histaminesplay a role in stimulating the release of stomach acid, thuscontributing to ... founded, and continues to function, to acquire, confirm the identity of, preserve and distribute bio-logical materials to scientists worldwide. Since its inception,the mandate has expanded to now...