Inkscape is a great OpenSource vector graphics software running under different OS platforms (Windows, Mac OS, GNU/Linux). You can start using parts of images in a vectorized format. SVG is the preferred Open format.
With the OpenSource text processing system LaTeX you can use PGF and TikZ, but it is far more complex to learn than Inkscape.
See https://inkscape.org/ and https://en.wikipedia.org/wiki/Scalable_Vector_Graphics
You can find a lot of opensource starting SVG biological images using following keywords in a search : wikimedia SVG biology
Any vector graphics software would do the 'trick'. The 'problem' will be that eg. the cell types are quite some work to design and won't be available off-the-shelf.
Inkscape is a great OpenSource vector graphics software running under different OS platforms (Windows, Mac OS, GNU/Linux). You can start using parts of images in a vectorized format. SVG is the preferred Open format.
With the OpenSource text processing system LaTeX you can use PGF and TikZ, but it is far more complex to learn than Inkscape.
See https://inkscape.org/ and https://en.wikipedia.org/wiki/Scalable_Vector_Graphics
You can find a lot of opensource starting SVG biological images using following keywords in a search : wikimedia SVG biology