A well known Canadian business family is making it easier for Sudbury to carry out cancer and vaccine research.  The Weston family has given the Advanced Medical Research Institute of Canada $25,000 for two pieces of equipment.  One is a colony counter and the other is a spiral plater inoculator.  The equipment will be used to research cancer, infectious diseases and to help develop vaccines.   The research institute is a division of the Health Science North hospital in Sudbury.