Pulsar-like structure, Glowing vortex, Fractal network, Bioluminescent cyst, Neuronal cluster, Cerebral node, Axial spiral, Skeletal fragment, Cartilaginous growth, Fibrous mass, Myelinated bundle, Cortical fold, Hemispheric lesion, Subcortical nodule, Dendritic extension, Synaptic terminal, Glial cell aggregate, Microvasculature, Epidermal inclusion, Viral capsid, Bacterial colony, Fungal hyphae, Parasitic cyst, Nematode segment