Serum has essentially the same composition as plasma, except that its fibrinogen and clotting factors II, V, & VIII have been removed.

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#Id: 2377

#Unit 5. Developmental Biology

Two distinct populations of neoblasts exist:

1. Sigma neoblast population 

2. Zeta neoblast population 

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#Id: 3210

#Unit 4. Cell Communication and Cell Signaling

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#Id: 4953

#Unit 6. System Physiology – Plant

Type I phytochrome (phyA) in the light as a result of a combination of factors: inhibition of transcription, mRNA degradation, and proteolysis.

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#Id: 2137

#Unit 8. Inheritance Biology

This suppression of recombination allows alleles adapted to a specific environment to remain together, unshuffled by recombination

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#Id: 5573

#Unit 7. System Physiology – Animal

The recirculation of urea helps to trap urea in the renal medulla and contributes to the hyperosmolarity of the renal medulla.