Unbalanced gene dosage leads to developmental abnormalities.

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#Id: 7228

#Unit 5. Developmental Biology

Superantigens

Viral or bacterial proteins that bind simultaneously to the Vβ domain of a T-cell receptor and to the α chain of a Class II MHC molecule

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#Id: 4646

#Unit 13. Methods in Biology

Diphenyltetrazolium bromide, a yellow tetrazole is reduced by metabolically active cells to form insoluble, purple formazan dye crystals detected at 570nm

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#Id: 1901

#Unit 4. Cell Communication and Cell Signaling

Regulation of TH1 and TH2 subset differentiation

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#Id: 2431

#Unit 3. Fundamental Processes

Rho binds to a sequence within the transcript upstream of the site of termination. This sequence is called a rut site (an acronym for rho utilization).

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#Id: 8198

#Unit 2. Cellular Organization

Lysosomes are membrane-enclosed organelles filled with soluble hydrolytic enzymes that digest macromolecules.