IN a previous communication 1, we reported the development of various structures on the growing surfaces of electrodeposited nickel, using electron microscopy. The deposits examined were obtained ...

Cowden's disease is characterized by multiple hamartomas of the skin, breast, thyroid, and gastrointestinal tract. In the past, a viral hypothesis for the keratotic lesions of the skin has led to ...

IN the past, considerable controversy has centred upon the interpretation of the observed optical heterogeneity of the secondary-cell walls of conifer tracheids when viewed between crossed Nicol ...