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Anyone who has had an intradermal tuberculosis test on the forearm is familiar with the “bleb.”

When administered, the injected vaccine leaves a small blister, called a bleb, under the skin.

I think if you can get it out with scissors, it’s probably a bleb.

Any RNA made by a cell should be distributed into the blebs randomly.

Consider, for example, the small goosebumplike blebs that pepper the paintings of Georgia O’Keeffe, the mid-20th-century artist made famous by her depictions of flowers and the Southwest United States.