◁think▷I need to write a descriptive text about the composite LF-NMR image of apple #121, focusing on internal moisture distribution, tissue structure, signal intensity, and patch morphology. I should avoid using certain prohibited words and keep the description between 50-80 words.

Let me analyze the image and think about what I can describe:

1. Internal moisture distribution: The image shows variations in grayscale intensity, which likely corresponds to moisture content. Darker areas might indicate higher moisture, while lighter areas might indicate drier regions.

2. Tissue structure: The image shows the internal structure of the apple. I can describe the general appearance of the tissues, perhaps noting if they appear uniform or have variations.

3. Signal intensity: In LF-NMR imaging, signal intensity relates to how the imaging technique responds to different tissues. I can describe which areas appear brighter or darker based on signal intensity.

4. Patch morphology: The image shows patches or areas with different characteristics. I can describe the shape, size, and distribution of these patches.

I need to be careful not to use the prohibited words like "healthy", "diseased", "mild", "severe", "normal", "abnormal", "ground-truth", or "label".

Now, let me draft a descriptive text that covers these aspects while avoiding prohibited words and keeping within the word limit:◁/think▷The composite LF-NMR image of apple #121 reveals a heterogeneous internal moisture distribution, with varying shades of gray indicating regions of differing water content. Tissue structure appears fibrous with distinct layering, while signal intensity varies across the cross-section. Patch morphology shows irregularly shaped regions with contrasting brightness, suggesting localized variations in tissue composition. The arrangement of these patches follows a somewhat random pattern, creating a mosaic-like pattern within the apple's structure. Overall, the image demonstrates characteristic LF-NMR response patterns that correlate with physical moisture variations within the fruit tissue.