Four bold illustrated stamps, by Nigel Buchanan, showcase Australian medical innovations, each of which is an example of close collaboration between experts across institutional and national borders. Two of the innovations, the electronic pacemaker and medical use of penicillin, were created in the mid-20th century; and two, spray-on skin cells and the HPV vaccine, were developed in more recent times.
Check the link for details: https://australiapostcollectables.com.au/stamp-issues/medical-innovations?
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