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A variety of programs have been written for the computer scoring of multiple choice questions, but the design of the program alone is not a complete solution to the problems of scoring. The program is only a part of a much wider system which must cover methods of accurate data collection, through to suitable dissemination of results. Fortunately, the parts of such systems may be manipulated independently, and we have utilized our own methods of data collection, which have been established for some time, together with our own scoring procedures, to introduce a method of result display which maximizes the return of information to students. Because this is only a special method of displaying the candidates' results, all other facilities of our major scoring program can be used concurrently.We believe that assessment is central to the learning and teaching processes, and we have therefore formulated a set of procedures which we call SLAM (Self Learning Assessment Module). SLAM is more flexible than a programmed course, and is easier to set up. Unlike programmed courses, parts of SLAM may be moved or altered independently of other parts. An important part of SLAM is the return of the student's results direct to the student, with the tutor retaining an advisory role.

A technique has been developed for studying the uptake of K42 by the foetal rat kidney. Using this technique the exchange rate for K42 of the foetal and neonatal metanephros relative to the foetal and neonatal liver has been investigated. It was found that the metanephros of the 20- and 21-day foetus shows a rate of exchange which is twice that of the liver, whereas the neonatal metanephros shows a rate of exchange which is less than half that of the liver. The results of this investigation demonstrate that the ratio of K42 uptake by the metanephros of the 20- and 21-day rat foetus, relative to that of the foetal liver, is one-quarter of that reported for the adult rat. An autoradiographic study of the distribution of K42 in the foetal kidney has shown that histological localization of the isotope in the proximal and distal tubules, found in the adult, does not occur.