Complex sentence: With the changes in authors and artists, the characters have become much more physically expressive, and plots have moved away from strictly medical themes as Rex and June tend to alternate in stories in which they confront threats and danger from a variety of malfeasants.
Split into simpler sentences: With the changes in authors and artists, the characters became much more physically expressive. Plots have moved away from strictly medical themes, as Rex and June alternate in stories, confronting threats and danger from a variety of malfeasants.