Dr Philippa Whitford @Dr_PhilippaW
RT @TimBierley: 'Salk didn’t patent his vaccine for polio. Fleming didn’t patent penicillin. Röntgen didn’t patent X-rays. Because they saw… — PolitiTweet.org
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Thu Jan 13 16:04:01 +0000 2022
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Likely AvailableDr Philippa Whitford @Dr_PhilippaW
RT @TimBierley: 'Salk didn’t patent his vaccine for polio. Fleming didn’t patent penicillin. Röntgen didn’t patent X-rays. Because they saw… — PolitiTweet.org