Otto Heinrich Warburg

Green, red, and mixed shades of haemins are known. If magnesium is replaced by iron in chlorophyll, green haemins are obtained. Their colour is due to a strong band in the red which is already recognized in chlorophyll.

I don't write directly on to the computer because I don't think well facing forward with fingers on a keyboard. I think better looking down holding a pen. And the concentration quotient of pen and paper is higher than when I'm moving words around on screen.

Actually, we chose the name Sun Cellular because we believe the name 'Sun' is bright, forward-looking and optimistic. It is my sincere hope that the whole Philippines will share our positive outlook, optimism and faith in the country's future.