Biology · Microbiology

Consider the following statements about Bacteriophages: I. They are specialized viruses that can infect both prokaryotic bacterial cells and eukaryotic human cells. II. Genetically engineered bacteriophages can be custom-designed to target and kill a broader spectrum of bacterial strains. III. A single naturally occurring strain of bacteriophage typically targets only a few specific strains or species of bacteria. IV. Phage therapy has been clinically deployed or researched to treat deep tissue burns, gut infections, and persistent urinary tract infections. How many of the above statements are correct?