Estrogen receptor determinations have been performed on 241 cytosols from 160 breast cancer tumors using both radioactive ligands ([3H])-estradiol, [3H]R2858) and monoclonal antibodies (Abbott ER-EIA Kit) in order to compare the two methods and to evaluate the clinical usefulness of the new immunological, simplified assay. Intra- and interassay reproducibility of the enzyme immunoassay (EIA) me...

Estrogen receptor determinations have been performed on 241 cytosols from 160 breast cancer rumors using both radioactive ligands (|'II|estradiol, |3H|R2858) and monoclonal antibodies (Abbott ER-EIA Kit) in order to compare the two methods and to evaluate the clinical useful ness of the new immunological, simplified assay. Intraand interassay reproducibility of the enzyme immunoassay (EIA) meth...

Brown-headed cowbirds (Molothrus ater) might reduce populations of the songbird species they parasitize, including endangered species. Data are therefore needed on the frequency with which cowbirds use different species of foster parents. Hahn et al. propose a clever new approach by which the identity of foster parents can be inferred from host-specific lice the cowbirds acquire as nestlings. W...

Fatty acid-binding protein (FABP) from rat liver cytosol is an abundant 14 000-M, monomeric protein that is known to have a high affinity for both fatty acids and their CoA esters, as well as a number of non-polar organic anions (Glatz & Veerkamp, 1985). The precise physiological role of this protein remains unclear and clarification of its functions will require more precise information on its...