There are 18 different antigenic subtypes for HA and 11 for NA.

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#Id: 5051

#Unit 3. Fundamental Processes

DnaA ATPase activity is stimulated by membrane phospholipids and single-stranded DNA.

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#Id: 1027

#Unit 5. Developmental Biology

The cells of the neural plate expresses:  Sox family of transcription factors (Sox1, 2, and 3)

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#Id: 2366

#Unit 5. Developmental Biology

Sigma neoblasts generate a huge variety of cell types, as well as the progenitor population for zeta neoblasts.

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#Id: 2629

#Unit 13. Methods in Biology

End-labelling of a gene probe at the 5′ end with alkaline phosphatase and polynucleotide kinase. 

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#Id: 460

#Unit 2. Cellular Organization

PHD and the Tudor domain also recognizes methyl-lysine.