Get comprehensive solutions to your questions with the help of IDNLearn.com's experts. Find the information you need quickly and easily with our reliable and thorough Q&A platform.
A vaccine
a. can be harmful because it contains pathogens such as viruses.
b. contains a changed pathogen, so the pathogen is no longer harmful.
c. provokes a response from the viral immune system.
d. all of the above
Your presence in our community is highly appreciated. Keep sharing your insights and solutions. Together, we can build a rich and valuable knowledge resource for everyone. IDNLearn.com has the solutions to your questions. Thanks for stopping by, and come back for more insightful information.
