Hirschsprung's disease, also known as congenital aganglionic megacolon, is a congenital disorder which develops due to an absence of neural ganglia in a segment of large bowel. Most commonly, the rectum or rectosigmoid, and rarely other areas or the entire colon are involved. In this disease, all three neural plexi, i.e., the myenteric (Auerbach's) plexus, the superficial submucosal (Meiss...

C a r c o t i s c o n s i d e r e d t h e father of neurology. Not so much appreciated are his contributions t o m e d i c i n e a n d rheumatology. In fact he has been considered o n e o f t h e m o s t influential physicians of all time. Charcot was born on 29th November 1825 in Paris. His father was a carriage builder. He could support higher e d u c a t i o n o f o n l y one of his four son...

The Martin polynomial of an oriented Eulerian graph encodes information about families of cycles in the graph. This paper uses a transformation of the Martin polynomial that facilitates standard combinatorial manipulations. These manipulations result in several new identities for the Martin polynomial, including a di.erentiation formula. These identities are then applied to get new combinatoria...