In planaria, Wnts functioning through β-catenin promotes tail development while repressing head regeneration

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#Id: 3867

#Unit 5. Developmental Biology

CMF stimulates gene expression in parallel with PSF, and both signals potentiate cAMP signaling by inducing genes involved in cAMP synthesis and detection

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#Id: 2812

#Unit 13. Methods in Biology

 In RPLC the organic solvent is referred to as an organic modifier.

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#Id: 3180

#Unit 3. Fundamental Processes

A mitochondrion divides by developing a ring around the organelle that constricts to pinch it into two halves. The mechanism is similar in principle to that involved in bacterial division.

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#Id: 7384

#Unit 5. Developmental Biology

An anterior-to-posterior gradient of Bicoid protein

An anterior-to-posterior gradient of Hunchback protein

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#Id: 9943

#Unit 4. Cell Communication and Cell Signaling

Virulence is due to its potent exotoxin, which destroys the underlying tissue and results in heart, liver, and kidney damage, as well as to suffocation following formation of a tough fibrous membrane in the respiratory tract