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At least 289 records · Page 16Linked to original sources
PubMed2001

Matriarchs as repositories of social knowledge in African elephants.

Despite widespread interest in the evolution of social intelligence, little is known about how wild animals acquire and store information about social companions or whether individuals possessing enhanced social knowledge derive biological fitness benefits. Using playback experiments on African elephants (Loxodonta africana), we demonstrated that the possession of enhanced discriminatory abilities by the oldest individual in a group can influence the social knowledge of the group as a whole. These superior abilities for social discrimination may result in higher per capita reproductive success for female groups led by older individuals. Our findings imply that the removal of older, more experienced individuals, which are often targets for hunters because of their large size, could have serious consequences for endangered populations of advanced social mammals such as elephants and whales.

Aging↗
PubMed1973

Cell repository.

Explore the source record for details and available documents.

Cell Line↗
PubMed1985

AIDS repository.

In the article "Spotlight falls on science policy" (News and Comment, 10 May, p. 691) by Mark H. Crawford, the findings of a General Accounting Office report on the operating costs of the Continuous Electron Beam Accelerator Facility (CEBAF) were overstated. The report found that the Department of Energy's operating costs would rise by $80 million if both CEBAF and the Relativistic Heavy Ion Collider are constructed. CEBAF's operating cost is estimated to be $30 million. The report also found problems in accommodating the operating costs of the proposed Superconducting Super Collider in the department's budget.

Acquired Immunodeficiency Syndrome↗
PubMed1988

Penicillin concentrations in cerebrospinal fluid (CSF) during repository treatment regimen for syphilis.

Penicillin concentrations in cerebrospinal fluid (CSF) were measured in 40 asymptomatic patients with syphilis, 10 of whom had neurosyphilis. The patients were treated with 2.4 MIU procaine penicillin a day intramuscularly in combination with 500 mg probenecid every six hours orally. This intramuscular treatment regimen did not consistently yield treponemicidal penicillin concentrations in the CSF (subtreponemicidal CSF concentrations were found in 17 patients, four of whom had neurosyphilis). These data provide additional evidence that the cure of asymptomatic neurosyphilis is not guaranteed by intramuscular penicillin treatment.

Drug Therapy, Combination↗