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Lactobacillus takes the stage here as a single rod-shaped probiotic bacterium with softly rounded ends. Long shallow flutes and gentle ridges run down its length, giving the cell surface a subtle texture that catches light along the curve. The clean capsule shape is simple, bold and easy to recognize at a glance. Use it to teach gut bacteria and microbiology in a classroom, pair it with other microbe models on a science shelf, or keep it on a nutrition or fermentation enthusiast's desk.

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