Cytotoxic T cells release granules containing the proteins perforin and granzyme-B. 

TLS Online TPP Program

#Id: 1899

#Unit 4. Cell Communication and Cell Signaling

Negative costimulation

TLS Online TPP Program

#Id: 9962

#Unit 4. Cell Communication and Cell Signaling

Principal signaling receptor is Frizzled (Fz), contains 

7 TM α helices.

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#Id: 7381

#Unit 5. Developmental Biology

The inhibition of Oskar translation is mediated by two proteins- 

Bruno

Cup

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#Id: 3711

#Unit 2. Cellular Organization

Hb anti-Lepore, Hb Kenya result from unequal crossing over between linked genes

TLS Online TPP Program

#Id: 519

#Unit 2. Cellular Organization

Escherichia coli K-12 with 950 gene/Mb gene density has 0 introns in genome and less than 1% repetitive sequences