The Avengers #140-Good (1.8 – 3)

"A Journey to the Center of the Ant" Part 2 of 2.
Yellowjacket has collapsed on the street outside the hospital following last issue's battle! And now his body is growing with every passing second! Fortunately though, the Beast has a plan to save Hank Pym! First, get a special serum from Hank McCoy's old laboratory at the Brand Corporation; and second, get the serum inside Yellowjacket as soon as possible! The Beast can handle step one, but who will take care of step two? The incomparable Vision! And in an awesome reversal of events from the classic Avengers 93, the synthezoid avenger enters the body of Hank Pym!