<a href="https://en.wikipedia.org/wiki/Alexander_Fleming" id="mwug" rel="mw:WikiLink" title="Alexander Fleming">Alexander Fleming</a> notices a bacteria-killing mold growing in his laboratory, discovering what later became known as <a href="https://en.wikipedia.org/wiki/Penicillin" id="mwuw" rel="mw:WikiLink" title="Penicillin">penicillin</a>.<sup about="#mwt121" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-22"}}' id="cite_ref-22" rel="dc:references" typeof="mw:Extension/ref"><a href="./September_28#cite_note-22" id="mwvA" style="counter-reset: mw-Ref 22;"><span class="mw-reflink-text" id="mwvQ">[22]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-22"><cite about="#mwt118" class="citation book cs1" id="CITEREFHaven1994">Haven, Kendall F. (1994). <i id="mwCGM">Marvels of Science<span id="mwCGQ" typeof="mw:DisplaySpace"> </span>: 50 Fascinating 5-Minute Reads</i>. Littleton, Colo: Libraries Unlimited. p.<span id="mwCGU" typeof="mw:Entity"> </span>182. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwCGY" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwCGc" typeof="mw:Entity"> </span><a href="./Special:BookSources/1-56308-159-8" id="mwCGg" rel="mw:WikiLink" title="Special:BookSources/1-56308-159-8"><bdi id="mwCGk">1-56308-159-8</bdi></a>.</cite><span about="#mwt118" class="Z3988" id="mwCGo" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Marvels+of+Science+%3A+50+Fascinating+5-Minute+Reads&amp;rft.place=Littleton%2C+Colo&amp;rft.pages=182&amp;rft.pub=Libraries+Unlimited&amp;rft.date=1994&amp;rft.isbn=1-56308-159-8&amp;rft.aulast=Haven&amp;rft.aufirst=Kendall+F.&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ASeptember+28"></span></span>