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.
Effects of teratogens during this period of developmental often times results in an âall or none effect.â That is, the effect of the teratogen, if it is to have any effect, will be so profound as to cause a spontaneous abortion. Some examples of teratogens known to cause human malformations are listed in the table below (Table 23-2). A few of the most common examples will be discussed below.