In a recent study published in Cell, researchers examined the wealth of information available regarding the heterogeneity of tissue macrophages. They pursued a conceptual framework for better ...

IT has been known for some time that after an attack of acute pancreatitis an intrinsically "normal" gall bladder may not function temporarily (as evidenced by cholecystography). 1 As far as we are ...

Differences in the geographic origin of genes may affect the function of human mitochondria--energy-generating organelles inside of cells--according to a new study. Mitochondria have their own genome, ...

Here, I propose a new model for the origin of new gene functions: an adaptive radiation model that integrates the amplification mutagenesis phenomenon observed in bacterial genetics with the patterns ...

Annals of Botany, New Series, Vol. 36, No. 144 (January 1972), pp. 73-81 (13 pages) The origin and development of vacuoles in root and root cap cells of Lepidium sativum was investigated at the ...