Multi-hit model

LOF mutations in the tumor suppressors APC and p53 and GOF mutation in the oncogene K-RAS establishing that multiple mutations in the same cell are needed for the cancer to form.

TLS Online TPP Program

#Id: 1929

#Unit 4. Cell Communication and Cell Signaling

Alternative Properdin-Activated Pathway

TLS Online TPP Program

#Id: 3735

#Unit 10. Ecological Principles

Regional diversity - Ecologists have often partitioned the overall species diversity of a region into different components

TLS Online TPP Program

#Id: 1658

#Unit 4. Cell Communication and Cell Signaling

Immunization is the process of eliciting a state of protective immunity against a disease-causing pathogen

TLS Online TPP Program

#Id: 2829

#Unit 13. Methods in Biology

Affinity chromatography exploits the unique property of extremely specific biological interactions to achieve separation and purification.

TLS Online TPP Program

#Id: 6075

#Unit 10. Ecological Principles

Loss of Biodiversity 

Direct ways: Deforestation, hunting, poaching, commercial exploitation.

Indirect ways: Loss or modification of the natural habitats, introduction of exotic species, pollution, etc.

Natural causes - Climate change