Minicells form when septum formation occurs too frequently or in the wrong place, with the result that one of the new daughter cells lacks a chromosome. 

TLS Online TPP Program

#Id: 1912

#Unit 4. Cell Communication and Cell Signaling

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: 3988

#Unit 2. Cellular Organization

By maintaining the unbound DNA in a relaxed state, topoisomerases facilitate the binding of histones to the DNA and the formation of additional nucleosomes.

Importantly, the overall effect on the plasmid is that the linking number is decreased as more nucleosomes are assembled

TLS Online TPP Program

#Id: 1741

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 523

#Unit 2. Cellular Organization

Exon Sequences Under Positive Selection Vary but Introns Are Conserved

TLS Online TPP Program

#Id: 2385

#Unit 3. Fundamental Processes

 Five ways to splice an RNA