Question

the hepatitis b vaccine is produced as shown in the image below. the purified hepatitis b antigen is the primary immune stimulating ingredient. this is an example of a __________ vaccine. naked dna subunit conjugate/ protein - based inactivated live attenuated

Explanation:

A subunit conjugate/protein - based vaccine uses a specific part (subunit) of the pathogen, in this case, the hepatitis B surface antigen. The process shown involves isolating the gene for the surface antigen, inserting it into a plasmid, having yeast cells produce the antigen, and then purifying it. Naked DNA vaccines use DNA directly. Inactivated vaccines use whole inactivated pathogens. Live - attenuated vaccines use weakened live pathogens. Since only the surface antigen (a protein - based subunit) is used here, it is a subunit conjugate/protein - based vaccine.

Answer:

subunit conjugate/protein - based