An aid worker is asked to travel immediately to a region where a disaster has taken place. There is a high risk of her being exposed to pathogens that could cause serious diseases.
Her doctor recommends that she should have an injection of antibodies, rather than a
vaccination of weakened pathogens, before she travels.
Explain the reasons for this.

6. in the dna double helix, how are the two strands of dna held together? a. chemical bonds between base pairs hold the two strands of dna together. b. hydrogen bonds between the base pairs hold the two strands of dna together. c. hydrogen bonds between sugar groups and phosphate groups hold the two strands of dna together. d. chemical bonds between sugar groups and phosphate groups hold the two strands of dna together.

During an investigation of an xss attack, the investigator comes across the term "[a-za-z0-9\%]+" in analyzed evidence details. what is the expression used for?

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?