A modification of the agglutination reaction, called agglutination inhibition, provides a highly sensitive assay for small quantities of an antigen. For example, one of the early types of home pregnancy test kits included latex particles coated with human chorionic gonadotropin (HCG) and antibody to HCG. 

TLS Online TPP Program

#Id: 1739

#Unit 4. Cell Communication and Cell Signaling

Class III MHC genes encode several different proteins, some with immune functions, include the complement components C4, C2, and factor B, TNF-α and Lymphotoxin-α [TNF- α].

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#Id: 5752

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 5464

#Unit 7. System Physiology – Animal

Low-affinity NGF receptor

p75 NTR (also called NTR 5 neurotrophin receptor) 

TLS Online TPP Program

#Id: 9785

#Unit 6. System Physiology – Plant

R gene Mi-1 confers resistance to aphids and whiteflies

Rice R gene Bph14 confers resistance to the brown plant hopper

Melon R gene Vat confers resistance to the cotton aphid. 

All of these R genes encode NBS–LRR receptors.

TLS Online TPP Program

#Id: 2369

#Unit 5. Developmental Biology

In regenerating planaria, Wnt/β-catenin functions to establish anterior-posterior polarity.