B cells migrate to the lymphoid follicles. They are directed there by chemokine interactions between CXCL13, which is secreted by follicular dendritic cells (FDCs).

TLS Online TPP Program

#Id: 9279

#XL - S Microbiology

The binding of Nod factors to the Nod factor receptors (NFRs), which contain extracellular LysM motifs, initiates an interaction with the conserved SYMRK receptor-like kinases containing a leucine-rich repeat (LRR) domain.

TLS Online TPP Program

#Id: 8623

#XL - R Botany

SCF and APC/C are multisubunit ubiquitin-protein ligases that belong to the RING finger family of ubiquitin-protein ligases.

TLS Online TPP Program

#Id: 9728

#XL - R Botany

Laticifers are made of individual cells and can occur either as articulated systems (single cells connected by a small tube) or non-articulated systems (one large syncytial cell).

TLS Online TPP Program

#Id: 8093

#XL - Q Biochemistry

TLS Online TPP Program

#Id: 8651

#XL - T Zoology

S phase cyclin-CDK accumulates in late G1 , they are immediately inactivated by binding of a CKI called Sic1