The time of sedimentation (in seconds) for a spherical particle is (Please see the picture below)
where t is the sedimentation time, is the viscosity of medium, R hydro is the
hydrodynamic radius of the particle, r b is the radial distance from the centre of rotation
to bottom of tube, r t is the radial distance from the centre of rotation to liquid meniscus,
ρ is the density of the particle, m is the density of the medium and is the angular velocity
of the rotor.

TLS Online TPP Program

#Id: 1750

#Unit 4. Cell Communication and Cell Signaling

Class II MHC transcriptional activator called CIITA and another transcription factor called RFX, have both been shown to activate the promoter of class II MHC genes.

Defects in these transcription factors cause one form of bare lymphocyte syndrome.

TLS Online TPP Program

#Id: 1751

#Unit 4. Cell Communication and Cell Signaling

Cross-presentation

TLS Online TPP Program

#Id: 1752

#Unit 4. Cell Communication and Cell Signaling

Codominant Expression

TLS Online TPP Program

#Id: 1753

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 1754

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 1755

#Unit 4. Cell Communication and Cell Signaling

Presentation of nonpeptide antigens derived from pathogens involves the nonclassical class I–like CD1 molecule