Help! Imagine someone you know is untamiliar
vaccines and wants to learn more. Explain to them how the
vaccines work. Include how long the person should expect to
wait after receiving the vaccine before they become immune. Be
sure to use the following terms in your "macrophage,"
"B cell," "antigen," "antibody," "immunity."

Explanation:\int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx  \lim_{n \to \infty} a_n B

the audience knows that nora is intentionally failing to dance correctly, but helmer doesnt

active voice: my father cut the tree.

passive voice: the tree was cut by my father.

active voice: people buy newspapers every day.

passive voice: newspapers are bought (by people) every day.

active voice: people have been using movies as political propaganda since world war ii.

passive voice: movies have been used as political propaganda since world war ii.

active voice: donna gave me my birthday present.

passive voice: i was given my birthday present (by donna). / my birthday present was given to me (by donna).

active voice: mom will leave the keys on the counter.

passive voice: the keys will be left (by mom) on the counter.

the words in parentheses are the agent of the passive voice and can be omitted when obvious, generic, or simply unnecessary.