Progress

With this work i am exploring the relationship between hemoglobin and chlorophyll. Their molecules are the same except for the presence of iron or magnesium in their centres.

I decided to show these centres with red and green buttons.

My years of collecting buttons has paid off because I found enough buttons of the right colour and shape to do the job.

The 1st buttons are sewn on.

I decide the buttons are successfully conveying the idea of the different colours produced by the different elements in the centre of each molecule.....

...so i continue sewing...