caption: The image shows a close up of a piece of paper with a circular pattern on it, which appears to be a photo of a sporozoan. The pattern is composed of a series of concentric circles, each with a distinct shape and size. The circles are arranged in a symmetrical pattern, with the largest circle in the center and the smallest in the outermost circle. The colors of the circles range from light brown to dark brown, and the pattern is intricate and detailed.