Quote Originally Posted by Archangel
I was under the impression that the only thing that was transmitted was that 1 time amaterasu that blew off on Tobi's face
We can't tell for sure what exactly Itachi did to Sasuke there, there was a triggered amaterasu, but as we have seen amaterasu is available to Sasuke as if it was his own technique. There can be more surprises coming.

As for the rib cage - does look like a mini susanoo, but I could use an explanation in, like, the next chapter as to why he has it at all. (like officially saying "itachi implanted more than just amaterasu on me").