Zothecula writes While financial contributions are certainly a great help for practitioners of health care in developing countries, one of the things they really need is a robust, portable, low cost of equipment medical infrastructure is compatible with an often limited at the local level. Several such devices are under development as a surgical lamp batteries, a centrifuge-based salad-spinner, and a baby who uses hot wax. UCLA working on another appropriate technology in the form of a small inexpensive microscope that uses holograms, instead of lenses to the image of what can only be seen by the human eye.