Original antigenic sin

Tendency to focus an immune attack on those structures that were present during the original.

This means that our immune systems effectively ignore the subtle changes occurring each year in pathogens

TLS Online TPP Program

#Id: 2896

#Unit 13. Methods in Biology

The more massive a biological particle is, the faster it moves in a centrifugal field.

TLS Online TPP Program

#Id: 2995

#Unit 13. Methods in Biology

Subcellular membrane systems that can be isolated by differential centrifugation.

TLS Online TPP Program

#Id: 8652

#Unit 2. Cellular Organization

TLS Online TPP Program

#Id: 1897

#Unit 4. Cell Communication and Cell Signaling

Three signals are required for activation of a naïve T cell

TLS Online TPP Program

#Id: 2112

#Unit 8. Inheritance Biology

Pseudodominance- Recessive allele owing to a deletion on the homologous chromosome.