![Bubble plot indicates the relative abundances of major OTUs retrieved from anaerobic packed-bed (AP) and hybrid packed-bed (HP) reactors. Bubble plot indicates the relative abundances of major OTUs retrieved from anaerobic packed-bed (AP) and hybrid packed-bed (HP) reactors.](https://s3-eu-west-1.amazonaws.com/ppreviews-plos-725668748/1940647/preview.jpg)
Bubble plot indicates the relative abundances of major OTUs retrieved from anaerobic packed-bed (AP) and hybrid packed-bed (HP) reactors.
![New York Yankees manager Aaron Boone blows a gum bubble before a baseball game against the Boston Red Sox, Friday, June 16, 2023, at Fenway Park in Boston. (AP Photo/Winslow Townson Stock New York Yankees manager Aaron Boone blows a gum bubble before a baseball game against the Boston Red Sox, Friday, June 16, 2023, at Fenway Park in Boston. (AP Photo/Winslow Townson Stock](https://c8.alamy.com/comp/2R7NGER/new-york-yankees-manager-aaron-boone-blows-a-gum-bubble-before-a-baseball-game-against-the-boston-red-sox-friday-june-16-2023-at-fenway-park-in-boston-ap-photowinslow-townson-2R7NGER.jpg)
New York Yankees manager Aaron Boone blows a gum bubble before a baseball game against the Boston Red Sox, Friday, June 16, 2023, at Fenway Park in Boston. (AP Photo/Winslow Townson Stock
![Bubble sign. AP pelvis radiograph of a patient with acute onset of left... | Download Scientific Diagram Bubble sign. AP pelvis radiograph of a patient with acute onset of left... | Download Scientific Diagram](https://www.researchgate.net/publication/263851863/figure/fig1/AS:613885044342792@1523373008722/Bubble-sign-AP-pelvis-radiograph-of-a-patient-with-acute-onset-of-left-hip-pain-and.png)