Orchids with their delicate blossoms are simple elegance. Receiving an orchid bouquet or plant is a little like taking a trip to paradise.
This interesting surname is of Anglo Saxon origin, and is a locational name from places called Marsden in Lancashire, and the West Riding of Yorkshire, deriving from the Olde English pre 7th Century mearc meaning boundary, and denu, valley; hence, a valley forming a natural boundary.he first recorded spelling of the family name is shown to be that of Alan de Marchesden, which was dated 1246, witness in the Assize Court Rolls of Lancashire, during the reign of King Henry 111, known as The Frenchman, 1216 - 1272.
Hans Spemann (1869 - 1941) Gastrulation means the formation of gut (Greek, gastrula = belly), but has now a more broad sense to to describe the formation of the trilaminar embryo. The epiblast layer, consisting of totipotential cells, derives all 3 embryo layers: endoderm, mesoderm and ectoderm. The primitive streak is the visible feature which represents the site of cell migration to form the additional layers.