Question

nucleic acid vaccines are very new. in fact there are currently only 2 vaccines of this type approved for use by the fda in humans. these mrna vaccines help prevent the spread of covid 19.
what would be the immune - stimulating ingredient from an mrna vaccine for covid?
the shell of the virus with its nucleic acid removed
a genetically altered virus that has the dna code from the covid virus inside it
only the virus spike protein created in a lab
the viruss spike protein produced by your own cells

Explanation:

mRNA vaccines work by delivering mRNA (messenger RNA) into cells. The mRNA contains the genetic code for the virus's spike protein. Once inside the cells, the cells use this mRNA as a template to produce the spike protein. This spike protein then acts as an antigen, stimulating the immune system to recognize and respond to it. The immune system then develops antibodies and memory cells against the spike protein, which can protect against future infection by the virus (in this case, the virus that causes Covid - 19).

• The first option (the shell of the virus with its nucleic acid removed) is more characteristic of a different type of vaccine (like a subunit or inactivated vaccine in some cases, but not mRNA).
• The second option (a genetically altered virus with DNA code) is more related to viral vector vaccines.
• The third option (only the spike protein created in a lab) is a subunit vaccine approach, not mRNA.

Answer:

the virus's spike protein produced by your own cells