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. live attenuated naked dna subunit conjugate/ protein - based inactivated

Explanation:

• Live - attenuated vaccines use weakened forms of the pathogen. This is not the case here as only the surface antigen is used.
• Naked DNA vaccines involve injecting DNA that codes for antigens. The process shown is about producing a protein (surface antigen) rather than using DNA directly as a vaccine.
• Inactivated vaccines use killed pathogens. Here, it's about a specific protein (surface antigen) not a killed pathogen.
• Subunit conjugate/protein - based vaccines use specific parts of the pathogen (like a protein antigen). The hepatitis B vaccine in the image uses the purified hepatitis B surface antigen (a protein), which fits the subunit conjugate/protein - based vaccine category.

Answer:

subunit conjugate/ protein - based