“…In addition to the bacteriophage therapy, phages can also be used in clinical diagnostics (Schofield, Sharp, & Westwater, ), applied as vehicles for vaccines delivery or as potential carriers of therapeutic genes (Haq, Chaudhry, Akhtar, Andleeb, & Qadri, ). Also phage display, as a technique for the study of protein‐protein, protein‐peptide and protein‐DNA interactions, is possible thanks to existence of phages (Bazan, Całkosiński, & Gamian, ). Due to versatility of applications and consequently potential higher phage production needs in the future, it is important to understand how physiological state of the host influence propagation of phages.…”