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CO2 laser technology has always stimulated a high degree of interest and enthusiasm due to its operating performance. This video presents a brief overwiew of four dental applications : use of the cw CO2 laser in mucous membrance surgery - use of the cw CO2 laser in apical surgery - use of the cw CO2 laser in the treatment of dental decay - use of the long-pulse TEA CO2 laser as a drill. CO2 laser treatment benefits both the patient and the practitioner. It improves the quality of dental…

A pluridisciplinary team of researchers of Institut Pasteur in Dakar and ORSTOM is doing a comparative study of malarial infection in two villages in Senegal : Dielmo and Ndiop. These villages have been chosen because of the presence of the disease, permanent in the first village, seasonal in the second, and also because the population has agreed to cooperate in this research project. The scientists have arranged a program for monitoring each individual in the population on a day-by-day basis…

Presentation of the researches and the accomplished progresses about the trisomy 21, a chromosomal anomaly, which affects one person on 700 at birth.

The new imaging equipments for medical diagnosis, which can show the depths of the human body are described in their use in hospitals by physicians and scientists in various fields. The Orsay hospital, thanks to a cyclotron, can produce radioactive elements, which, fastened to biological molecules, are detected by a positron camera, which can follow the motions of these tracers in the human body. At Institut Curie, the radioactive molecules injected in the body are tracked by a gamma camera…

Epidemiologic study of a cats population (Felis catus), led at the Claude Bernard University located in Lyon, in order to observe the circulation of the FIV (feline immunodeficiency virus) which causes the same phases that the HIV (human immunodeficiency virus).

Researchers at the Jacques Monod Institute (Paris) are studying the peptides in the venom of the tree frog Phillomedusa bicolor, searching for new hormones in order to design synthetic molecules for therapeutic uses.

In a pharmaceutical research laboratory, a chemist has found an unknown tablet and has made it analyzed with three different spectroscopic techniques by his colleagues, to determine the molecular structure of its active ingredient.

In the Jacques Monod Institute, monkey tree frogs (phyllomedusa) are bred in a greenhouse, in which their biotope has been recreated. Their behavior inside the greenhouse is studied and shown in this film.

Professor Slonimsky's team has deciphered part of Chromosome 3 of baker's yeast, chosen for its many analogies with the human chromosome.

J.P. Lecanuet studies the reactions of the human foetus to sound stimuli and its ability to distinguish between different sounds.

A CNRS team in Grenoble uses a robot to help carry out a stereotactic cranial biopsy. The robot, guided by software that processes NMR and X-ray imagery into a 3-D model, optimizes the path taken by surgical instruments.

Professor Benabid and his neurosurgery team carry out a stereotactic cranial biopsy with the help of a robot. Software based on digitizing a map of the brain produces a 3-D model from NMR and X-ray imagery and guides the robot, enabling the surgeon to optimize the path taken by his instruments.

To cure fibrillation of the heart ventricle, emergency electroshock treatment is used. This is more effective if four electrodes are used, producing cross-shocks.

Collecting tropical plants in the forests of New Caledonia and extracting their active compounds in ORSTOM's Nouméa laboratory and the CNRS laboratory in Gif-sur-Yvette, with a view to pharmacological applications, especially in the fight against cancer.

Presentation of a valve model that enables flow control and can be used as an artificial heart valve, showing the simple geometrical properties that determine how it functions.

Illustration of the uses humankind has made of galls (which develop on plants as a result of parasite attack), from the earliest civilizations to the early 20th century.