This isn't quite as bad as the garden variety "in mice" studies:
> The combination therapy also led to significant regression in genetically engineered mouse tumours and in human cancer tissues grown in lab mice, known as patient-derived tumour xenografts (PDX).
> The combination therapy also led to significant regression in genetically engineered mouse tumours and in human cancer tissues grown in lab mice, known as patient-derived tumour xenografts (PDX).