COMPARATIVELY little use has been made of paper chromatography for micro or semimicro preparative purposes. A difficulty encountered in such work is that of applying relatively large quantities of ...

Vermont is known for beautiful fall colors. Every Autumn, the green leaves change into a wonderful collage of oranges, yellows, and reds. It may seem like the colors just appear out of nowhere, but ...

THE capacity of an enzyme preparation to activate amino-acids is usually measured by means of the amino-acid dependent isotope exchange reaction between pyrophosphate labelled with phosphorus-32 and ...