Object: Electronic Auction - Purchase And Acquisition Of Medicines (Antimicrobials; Correlates; Dermatological; Hormones And Analogues, Immunotherapy And Allergy; Miscellaneous Medicines; Blood And Hematopoietic Organs; Large And Small Volume Solution And Ophthalmology) In Order To Meet The Demand Of The Brazilian Hospital Services Company (Ebserh), Branch, Hospital For Tropical Diseases Of The Federal University Of Tocantins In Araguaína-To.