Mast cells are released from the bone marrow into the blood as undifferentiated cells; they mature only after they leave the blood.

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#Unit 2. Cellular Organization

ActA protein binds the host protein VASP, which enhance actin assembly and confine it to the rear of the bacterium.

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#Unit 3. Fundamental Processes

UHRF1 also interacts with methylated histone H3, which connects the maintenance of DNA methylation with the stabilization of heterochromatin structure

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#Unit 10. Ecological Principles

Efficiency of Energy transfer The efficiency of energy transfer is influenced by the established laws of thermodynamics.

Efficiency of consumers as energy transformers is trophic-level transfer efficiency

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#Id: 5022

#Unit 3. Fundamental Processes

Interphase = G1 + S + G2

The start of S phase is signaled by the activation of the first replicon, usually in euchromatin, in areas of active genes.

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#Unit 4. Cell Communication and Cell Signaling

Long-term regulation: 

• SOCS proteins

• Targets the receptor as well as JAK2 for degradation by the ubiquitin-proteasome pathway