They were testing tomatoes that they had picked, taking the flesh of their skin, putting it in a test tube, mixing it with chemicals to extract DNA and then using their home DNA copier to test those tomatoes for genetically engineered traits.
Estavam testando tomates que eles mesmo colheram, descascaram e colocaram num pequeno tubo de ensaio, misturaram com elementos para extrair o DNA e utilizaram seu copiador de DNA caseiro para testar se os tomates foram transformados geneticamente.