by Elio — Al­lan Camp­bell died re­cently, and sci­ence lost an em­i­nent mi­cro­bial ge­neti­cist. He dis­cov­ered truly cen­tral mech­a­nisms in phage bi­ol­ogy, for ex­am­ple, how tem­per­ate phage in­te­grate into the genome of their host and how they exit from it (the Camp­bell Model). And I lost a trea­sured pal, as Al­lan and I were...