tobacco dusting eye dust," or Shafer's sign, refers to the presence of fine brown pigmented cells (from the retinal pigment epithelium) floating in the anterior vitreous. ⚠️ It's an important clinical clue because, in Schaffer's Sign Retinal Detachment Slit

"My favorite memory was working with all the wonderful cast members like Jeannie Russell, who played Margaret, Gloria Henry, who played my mom [and] Herbert Anderson, who played my dad," North shared with The Washington Times in 2017

Results published on our lab testing transparency page

Industrial-scale machine sales are tied to major tobacco manufacturing expansions

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These compounds function as neurotoxins by imitating the action of acetylcholine, similar to the mechanism of organophosphate or carbamate insecticides (Isman 2006)