Abstract: Higher concentrations of oak bark ash extract, i.e., greater than 20% by weight, are useful for the treatment of skin cancers. Lower concentrations of oak bark extract possess additional therapeutic properties not heretofore recognized. For example, preparations containing 40-80% oak bark extract are useful in the treatment of acute cancerous skin ulcers. In addition, synthetic mixtures containing potassium ions, zinc ions, calcium ions provide many of the same advantageous properties of oak bark extract. The inclusion of rubidium ions and sulfur is also advantageous for some applications.

Abstract: Higher concentrations of oak bark ash extract, i.e., greater than 20% by weight, are useful for the treatment of skin cancers. Lower concentrations of oak bark extract possess additional therapeutic properties not heretofore recognized. For example, preparations containing 40-80% oak bark extract are useful. in the treatment of acute cancerous skin ulcers. In addition, synthetic mixtures containing potassium ions, zinc ions, calcium ions provide many of the same advantageous properties of oak bark extract. The inclusion of rubidium ions and sulfur is also advantageous for some applications.

Abstract: A computer controlled interactive instruction system for teaching an individual comprising a peripheral having at least one sensor for producing a signal representing a function which has been or is to be manually performed by the individual, a first device for storing a sequence of signals representing instructions relating to the correct manner of performing the function, a first display coupled to the storing device for displaying the instructions, a second device for storing video and associated audio signals representing both pictorial and oral representations of the correct manner of performing the function, a second display for displaying the pictorial representation, and a computer coupled to the peripheral, the first and second storage devices and the first and second displays for causing an ordered sequence of the instruction signals in the first signal storage device to be displayed by the first display whereby the individual may learn to recognize and to perform the function, for receiving the sig