ok u know how guildienstine takes michelle and henri than u have to go threw the double doors outside in the research room its telling me its locked where do i get the key to open the danm doors ive been running around the whole zoo couple of times looking for the danm key hELP ME PLEASE

You have to take the boat back to the entrance (where Michelle appeared in the Zoo in the beginning of this place). Go to the far end of the opposite direction of the Protective mirror and enter the room. You should see a door covered by some blue sluggish thing. I think you know what to do next.

I can not get through the door with the blue stuff. All of my weapons are maxed out. What do I do?

You go to the room where the gorrilla mutated things bust out of the windows in the small room/building, near where you went with Michelle (before you see Samanosuke's panda suit board outside). You have to have your Kuga out (upgraded to level 2) and then open the door to get the key. Hope this helps ^^

-Jarr3d