The acrosome reaction, exposes the inner acrosomal membrane to the outside. The junction between this inner acrosomal membrane and the sperm cell membrane is called the equatorial region, and this is where membrane fusion between sperm and egg begins

TLS Online TPP Program

#Id: 1904

#Unit 4. Cell Communication and Cell Signaling

B cell properties

1.    They are APCs

2.    They can express MHC2

3.    Have surface marker  CD19

4.    Antibodies at surface of b cell – IgM, IgD

5.    Part of Adaptive immunity

6.    B cell convert into plasma cell

TLS Online TPP Program

#Id: 1905

#Unit 4. Cell Communication and Cell Signaling

Surface protein on B cell

CR2(CR21)

CD19

TAPA-1(CD81)

 mIg

Igα/ Igβ

(CD79a and CD79B)

 TLR

CD40

B7 (CD80/86)

ICAM-1

MHC-1 and 2

CD 22

TLS Online TPP Program

#Id: 1906

#Unit 4. Cell Communication and Cell Signaling

Formation of mature B-cell

TLS Online TPP Program

#Id: 1907

#Unit 4. Cell Communication and Cell Signaling

Progress through their developmental program

TLS Online TPP Program

#Id: 1908

#Unit 4. Cell Communication and Cell Signaling

B-Cell Development

TLS Online TPP Program

#Id: 1909

#Unit 4. Cell Communication and Cell Signaling