References ............................................... 59 Subject Index ............................................. 65 6 Introduction The retina as an organ of perception of light, colour, shape and movement has been the subject of numerous and intensive light- and electron-microscopical investigations. To date the interest in these has largely been concentrated on the structure of the ma- ture retina and the genesis of its cellular elements. The first exhaustive observations on the development of the retina in vertebrates were made by Babuchin (1863). Using the retinae of chicken...

The international symposium on transposition of the great arteries was held in Munich on May 3-5, 1991. It was organized by the German Heart Center Muni eh with two aims: firstly, to commemorate the 25th anniversary of Dr. Rashkind's publication: "Creation of an atrial septal defect without thoracotomy" (which appeared in 1966 in the Journal of the American Medical Association), and to honor this great pediatric cardiologist, who was one the pioneers of interventional catheterization. secondly, to give an overview of current medical knowledge about the pre- and postnatal diagnosis, medical...