This is a grayscale electron micrograph depicting a synaptic cleft. A dark, irregularly shaped structure, presumably a vesicle, is positioned close to the presynaptic membrane. The presynaptic membrane forms a curved line, and the postsynaptic density appears as a darker area on the opposing side. Several vesicles of varying sizes are visible within the presynaptic region. The overall texture is granular, consistent with an electron microscopic image of cellular structures. The image is high in detail and provides a close-up view of the components involved in neurotransmission.
