And so this tumor is now growing in this mouse's brain, and then we've taken a doctor and asked the doctor to please operate on the mouse as if that was a patient, and take out piece by piece out of the tumor.
O tumor está agora a crescer no cérebro do rato, e fomos ter com um médico e pedimos-lhe para operar o rato como se fosse um doente, e extrair o tumor, pedaço a pedaço.