This week's image is of treated and stained HeLa cells, which I selected because I'm currently engrossed in The Immortal Life of Henrietta Lacks. Like just about everyone else has said, it's an extraordinary book.
If you haven't read the book yet or if you want to know more about Henrietta Lacks, you might also listen to Paul Costello's interview with The Immortal Life author Rebecca Skloot.
Photo by Anne Martinez / GE Healthcare
