software to draw biological diagram - (Nov/19/2013 )

Hi,

I really need help.

Is there any free software for mac to draw biological diagram, I search a lot but can’t find any.

Actually I need to draw production process of lentivectors and how they infect the host cell.

Cheers

Neda

For these sorts of things most people use Adobe Illustrator or variants on that - the free version is called Inkscape, and works very well, but can be equally as confusing as using Illustrator.

I agree with Bob, Illustrator is the right program to use. Although it is expensive, has a long learning curve, being able to use it is like being able to speak a new language. It can benefit your whole life.