Pic­tures Con­sid­ered #7 by Elio — In 1962 Cole and Hahn pub­lished in 'Sci­ence' an unas­sum­ing sound­ing pa­per en­ti­tled "Cell wall repli­ca­tion in Strep­to­coc­cus pyo­genes." The au­thors asked the ques­tion: do strep cells syn­the­size their cell wall by in­ter­ca­lat­ing new parts at dif­fer­ent sites on their sur­face or does this take place at one site…