scratch test
A form of skin test in which antigen is applied through a scratch in the skin.
Dictionary > Scratch test
You will also like...

A Balanced Diet – Minerals and Proteins
Proteins and minerals can be derived from various dietary sources. They are essential for the proper growth and developm..

Genetic Control – On and Off Genes
Genes are the blueprint of our bodies, a blueprint that creates a variety of proteins essential to any organism's surviv..

Adaptation Tutorial
Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..

Abiotic and Biotic Factors
This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..

Gene Action – Operon Hypothesis
Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..
..

Dominance
This tutorial presents Gregor Mendel's law of dominance. Learn more about this form of inheritance and how it can be pre..