Abstract: A medium is provided which is useful in a fast and convenient system for multiplying cassava plants vegetatively by means of in vitro micropropagation of nodal cultures. This medium includes in parts per million the following:______________________________________ about 1200 NH.sub.4 NO.sub.3 from about 1000-1500 KNO.sub.3 about 300 MgSO.sub.4.7H.sub.2 O from about 150-300 NaH.sub.2 PO.sub.4.H.sub.2 O from about 150-300 CaCl.sub.2.2H.sub.2 O from about 18.5-37 Na.sub.2.EDTA from about 13.9-27.8 FeSO.sub.4.7H.sub.2 O. ______________________________________and suitable amounts of essential ingredients for a cassava micropropagation medium.In paticular, the medium also contains in part per million about: 3.0 H.sub.3 BO.sub.3, 10.0 MnSO.sub.4.H.sub.2 O, 6.0 ZnSO.sub.4.7H.sub.2 O, 0.25 Na.sub.2 MoO.sub.4.2H.sub.2 O, 0.025 CuSO.sub.4.5H.sub.2 O, 0.025 CaCl.sub.2.6H.sub.2 O, 0.75 KI, 2.5 Nicotinic acid, 10.0 Thiamine HCl, 1.0 Pyridoxine HCl, 100.0 M-inositol, 0.5 Glycine, 0.5 Folic acid, 0.05 Biotin, 0.

Abstract: A composition useful for relieving the symptoms of psoriasis in humans are disclosed. The composition is an N-trialkylsilyl-substituted 6-aminonicotinamide. The composition is applied in a suitable pharmaceutical base, such as a cream or ointment, to the affected area of skin.

Abstract: The use of a composition for relieving the symptoms of psoriasis in humans is disclosed. The composition is an N-trialkylsilyl-substituted 6-aminonicotinamide. The composition is applied in a suitable pharmaceutical base, such as a cream or ointment, to the affected area of skin.

Abstract: An evaporative cooling chamber useful for growing plants produced from in vitro cultures includes a floor constructed of cotton matting to permit liquid water to be brought into capillary contact with plant material placed thereon, sidewalls of cheesecloth or saran extending vertically upward, a water delivery system of ooze piping for delivering water along the top edges of the side walls, including a water supply trough for feeding the ooze piping and a translucent roof member adapted to receive water of condensation formed within the chamber and to deliver the condensed water to the water supply trough for recirculation and continuation of the evaporative cooling process.