Embryo implantation in humans. After fertilization the human embryo begins a 4 day long journey down the fallopian tube and into the uterus. When the embryo reaches the blastocyst stage it develops two distinct populations of cells. The outer cell mass,called the trophectoderm, and the inner cell mass.
Cat eye glasses. Named after their resemblance to the shape of a cat's eye, cat eye glasses are probably the most popular style of vintage eyeglasses. Though cat eye glasses were around since the 1950's, they reached their peak popularity when Audrey Hepburn wore a pair in the 1961 film Breakfast at Tiffany's.
#1: Modern Cat Eye Sunglasses. When it comes to the shapes of the eyes, we already discovered in the fall 2015 makeup trends that cat eyes are big. Then again, cat eyes are usually a staple for any season, having turned into an evergreen trend that rarely ever leaves the runway.2: Sunglasses with Darker Shaded Lenses. During the spring and summer shows, we were treated to colorful lenses, lighter colors and ombre sunglasses. There were a few darker shades, but they seemed a bit more prominent on our current fall and winter Fashion Week runway shows.