The Story:
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Something’s amiss at the House of Xavier! A sneak attack forces the X-Men to re-evaluate just who their friends are, and to align themselves with former enemies! The Xavier Institute will never be the same.
Stories from this comic have been reprinted in a collection, Decimation: X-Men the Day After (Trade Paperback), which was released on Apr., 26, 2006 Find it at online retailers or at a comic shop near you:
Marvel publishes several different lines of comics simultaneously. Some of the different names you'll see are Marvel Univrse, Marvel Adventures, Marvel Knights, Ultimate and more.
Comic Book Rating
Each Marvel comic gets a rating: A is appropriate for ages nine and up, T+ is appropriate for ages 12 and up and Parental Advisory is appropriate for ages 15 and up. Other ratings you may see are self-explanatory.
Comic Book Format
Comics come in their single issue format as noted by the word "Comic", but they're also sometimes available in "Hardcovers" or "Trade Paperbacks" which generally collect several comics at once.