A close-up of a microscopic view of a plant stem. The stem appears to be elongated and has a reddish-brown color. On the left side of the image there is a blue bar with the words "High pH" and "Low pH" written on it. The blue bar is slightly larger than the red bar indicating that the plant stem is high in pH. On the right side there are several small particles scattered around the stem which appear to be small and irregularly shaped. The particles are black and white in color and are clustered together in a circular pattern. The background is a light blue color which contrasts with the dark brown of the stem.

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