A precipitation curve for a system of one antigen and its antibodies. This plot of the amount of antibody precipitated versus increasing antigen concentrations (at constant total antibody) reveals three zones: 

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#Id: 9591

#Unit 11. Evolution and Behavior

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#Id: 5915

#Unit 3. Fundamental Processes

Replicons are referred to as being of the PhiX or oriC type.

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#Id: 2496

#Unit 13. Methods in Biology

.In the Native (Buffer) Gels electrophoresis SDS is absent, and the proteins are not denatured prior to loading. Since all the proteins in the sample being analyzed carry their native charge at the pH of the gel (normally pH 8.7), proteins separate according to their different electrophoretic mobilities and the sieving effects of the gel.

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#Id: 9667

#Unit 4. Cell Communication and Cell Signaling

In cells, PI-3 kinase pathway :

Triggers cell division 

Prevents apoptosis

Induces specific changes in cell metabolism

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#Id: 9117

#Unit 10. Ecological Principles

The number of predators, P, increase when prey numbers are high and decrease when prey numbers, N