A simple method for desalting biological fluids for paper chromatography of amino-acids.

A quick method of performing the Paul-Bunnell reaction is described which is as sensitive as the orthodox method. When read at two hours the rapid test appears to be definitely more sensitive than the orthodox method. When the rapid method is performed in the later stages of glandular fever a much higher titre is obtained than by the orthodox method. This might prove to be of diagnostic importance in such cases, particularly if they have not been investigated in the early stages. The validity of this point is being investigated further.