The Visible Embryo. "This spiral represents the 23 stages occurring in the first trimester of pregnancy and every two weeks of the second and third trimesters. Use the spiral to navigate through the 40 weeks of pregnancy and preview the unique changes in each stage of human development." via The Eyes Have It, which sadly looks as if it hasn't been updated since February, but still has much of interest to offer.
posted by jokeefe on Jul 27, 2003 - 13 comments