As filed with the U.S. Securities and Exchange Commission on February 9, 2023. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 2 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 REVELATION BIOSCIENCES, INC. (Exact name of registrant as specified in its charter) DELAWARE (Jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) 2834 84-3898466 (I.R.S. Employer Identification Number) 4660 La Jolla Village D ...