The bulk update request #5639 is pending approval.
create implication transformation_by_substance (425) -> transformation (81280)
create implication transformation_through_food (153) -> transformation_by_substance (425)
create implication transformation_through_injection (151) -> transformation_by_substance (425)
create implication transformation_through_smoking (42) -> transformation_by_substance (425)
create implication transformation_through_urine (1) -> transformation_by_substance (425)
create implication transformation_through_liquid (3) -> transformation_by_substance (425)
Reason: Transformation by substance would be a transformation as it describes the transformation process. The other tags would be sub-categories of transformation by substance.