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Untitled - D Ank Unlimited

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LAMP 1 and LAMP 2 439 Landsteiner, Karl (1868–1943)<br />

Karl Landsteiner in his laboratory.<br />

LAMP 1 and LAMP 2<br />

Lysosome-associated membrane proteins that are complex<br />

molecular structures involved in maintaining lysosomal<br />

membrane integrity in cytotoxic lymphocytes and in platelets.<br />

LAMP 1 is designated CD107a; LAMP 2 is designated<br />

CD107b.<br />

Lancefield precipitation test<br />

A ring precipitation test developed by Rebecca Lancefield<br />

to classify streptococci according to their group-specific<br />

polysaccharides. The polysaccharide antigen is derived<br />

by treatment of cultures of the microorganisms with HCl,<br />

formimide, or a Streptomyces albus enzyme. Antiserum<br />

is first placed into a serological tube, followed by layering<br />

the polysaccharide antigen over it. A positive reaction is<br />

indicated by precipitation at the interface.<br />

Landsteiner, Karl (1868–1943)<br />

Discoverer of the ABO and other blood group systems<br />

including MN and the Rh factor. Landsteiner developed<br />

Title page of Karl Landsteiner’s article describing the human blood groups.<br />

L

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