Complex sentence: Using genetic sequencing technology, the team also discovered the tumours' transcriptome, the set of genes that are activated in tumours, and they closely matched those of Schwann cells, which gave an indication as to where the disease originated.
Split into simpler sentences: Using genetic sequencing technology, the team also discovered the tumours' transcriptome, the set of genes that are activated in tumours. They closely matched those of Schwann cells, which gave an indication as to where the disease originated.