Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: The transmembrane proteins that bind to intracellular and extracellular proteins are: 
 Options:  <1> Ocludines. <2> Cadherins. <3> Actins. <4> Integrins <5> Desmocolinas.
