mesoderm. in biology, middle layer of tissue formed in the gastrula stage of the developing embryo. At the end of the blastula stage, cells of the embryo are arranged in the form of a hollow ball.
8th Anniversary Gift Ideas. Traditionally, couples give gifts of bronze or pottery to celebrate their 8th wedding anniversary. Bronze is created by combining two different metals, copper and tin, to make something strong and beautiful, just like a marriage brings two people together into something more.
Personalized To Any Year Anniversary Plate. Emerald jewelry would be the classic gift for the 55th anniverary, and there are many great earring, pendant, ring, and bracelet choices, but if she is not into emeralds, feel free to try the modern material of turquoise jewelry as a lovely alternative.