Recent Examples on the WebVoight and colleagues then studied the animals' physical structures, including their arm suckers, warts, and tubercles, or little bumps inside the warts that give them texture. Liz Langley, National Geographic, 8 Oct. 2019 In turn, the ruptured tubercles attract dissolved copper, spurring a chemical reaction that can pit and weaken the surrounding steel. Peter Passi / Forum News Service, Twin Cities, 5 Sep. 2019 Those tubercles can be opened by the scouring power of winter ice. Peter Passi / Forum News Service, Twin Cities, 5 Sep. 2019 Allison and his colleagues also found lesions (called tubercles) and Mycobacterium tuberculosis bacteria in the boy’s lungs, heart, liver, and right kidney. Kiona N. Smith, Ars Technica, 25 Sep. 2018 According to Carly Cassella of Science Alert, the critter boasts a number of features that are not seen in any other modern turtle, like the two rows of tubercles that act like feelers. Brigit Katz, Smithsonian, 13 Apr. 2018