Skoltech researchers Elena Kurilovich and Konstantin Severinov have co-authored a recent preprint “Bacteriostatic antibiotics promote the evolution of CRISPR-Cas immunity”. The scientists have shown that bacteriostatic antibiotics (which inhibit cell growth without killing) specifically promote evolution of CRISPR-Cas immunity in Pseudomonas aeruginosa by slowing down phage development and providing more time for cells to acquire phage-derived sequences and mount an immune response. Full text of the preprint is available here.