Kungani uNovemba 14 kugujwa njengosuku lomhlaba wonke lwesifo sikashukela?
USir Frederick Banting owathola i-Insulin ngo-1922 wazalwa ngoNovemba 14 yingakho uNovemba 14 kugujwa njengoSuku Lwesifo Sikashukela Lomhlaba Wonke