For the MS degree: No. The University residency requirement is 45 units taken at Stanford for an MS. No transfer credits are allowed to count towards the masters residency requirement. For the PhD degree: Yes. The PhD requires 135 units, of which 90 units must be taken at Stanford during the PhD program.
The term carcinogen denotes a chemical substance or a mixture of chemical substances. which induce cancer or increase its incidence. Substances which have induced benign and malignant. tumours in well performed experimental studies on animals are considered also to be presumed or.
Exposure to several carcinogens at once may result in cancer rates higher than would be expected by adding the risks from each carcinogen separately. This is known as a synergistic effect. For example, both cigarette smoking and exposure to asbestos have been show to cause cancer.