Solution:
Alpha interferons can stimulate the immune system to recognise and attack cancer cells. They may also inhibit the growth and division of cancer cells, and suppress the development of new blood vessels that are essential for tumour growth.
Perforins are the proteins involved in the destruction of infected or abnormal cells by creating pores in the target cell’s membrane and facilitating the entry of other proteins (e.g., granzymes) to trigger programmed cell death.