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TLS Online TPP Program

#Id: 8347

To nucleate the assembly of branched actin filaments, Arp2/3 needs to be activated by a nucleation promoting factor (NPF)

#Section 3: Genetics, Cellular and Molecular Biology #MICROFILAMENTS #Part B Pointers
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TLS Online TPP Program

#Id: 10342

#Section 2: General Biology
TLS Online TPP Program

#Id: 10343

#Section 2: General Biology

The heavy chain is then expressed on the cell surface in combination with the surrogate light chain, which is made up of VpreB and λ5. 
TLS Online TPP Program

#Id: 10344

#Section 2: General Biology

B- cell maturation
TLS Online TPP Program

#Id: 10345

#Section 2: General Biology

T1 and T2 Transitional B Cells
TLS Online TPP Program

#Id: 10346

#Section 2: General Biology

T1 cells are mIgMhi, mIgD -/lo, CD21-, CD23-, CD24+, and CD93+. 
T2 cells differ from T1 cells in having higher levels of mIgD and in expressing CD21 and CD23. 
TLS Online TPP Program

#Id: 10347

#Section 2: General Biology

Transitional B cells bound for a follicular fate undergo positive and negative selection in the spleen.