[EN] Hydrogels are polymeric networks capable of absorbing large amounts of water, without losing their three-dimensional structure, and they constitute a very favorable environment to house biomolecules and for biointeractions ...[+] [EN] Hydrogels are polymeric networks capable of absorbing large amounts of water, without losing their three-dimensional structure, and they constitute a very favorable environment to house biomolecules and for biointeractions to take place.