Kafka paraffin reaction in cerebrospinal fluid

Colloids, first applied to study cerebrospinal fluid in 1912 by Lange, have taken a firm place in diagnostics in the form of so-called colloidal reactions. These reactions, as it is known, consist in that artificially prepared colloidal solution is mixed with cerebrospinal fluid in various quantitative ratios, and the reagent undergoes characteristic changes, which can be recorded in the form of curves. Many colloidal reactions have been proposed, but the most common of these are Lange's Goldsol- reaktion, where a colloidal solution of gold is the reagent, and Emanuel's Mastic Reaction. In the relatively short time of their existence, these reactions have generated a huge literature, which is overtaken, on the one hand, by the increased interest of modern neurological clinics in cerebrospinal fluid, on the other hand, by the value of the results of colloid reactions, which often provide an opportunity to make a more accurate and differentiated diagnosis of liquor than it has been possible so far.