“Nina Nikitina walked into a large, cool vestibule. At its threshold ended the power of climate, seasons, and the time of day. Whether a winter blizzard raged over Leningrad, or whether the July sun relentlessly scorched in the heat, in the new building of the Institute of Experimental Medicine there was a permanent climate with firmly set temperature and humidity. After the street heat, the air—filtered to pure—felt refreshing like a sea breeze…”