As an adjective microscopic

is microscopic.

As a noun neurofibril is

(anatomy) any of a group of microscopic fibrils through the body of a neuron that extend into the axon and dendrites.

As nouns the difference between fibril and neurofibril

is that fibril is a fine fibre or filament while neurofibril is (anatomy) any of a group of microscopic fibrils through the body of a neuron that extend into the axon and dendrites.

As a proper noun neuron

is title of a peer reviewed journal established in 1988 by publisher cell press.

As a noun neurofibril is

(anatomy) any of a group of microscopic fibrils through the body of a neuron that extend into the axon and dendrites.

As nouns the difference between axon and neurofibril

is that axon is axon while neurofibril is (anatomy) any of a group of microscopic fibrils through the body of a neuron that extend into the axon and dendrites.

As nouns the difference between dendrite and neurofibril

is that dendrite is (cytology) a slender projection of a nerve cell which conducts nerve impulses from a synapse to the body of the cell; a dendron while neurofibril is (anatomy) any of a group of microscopic fibrils through the body of a neuron that extend into the axon and dendrites.

As an adjective nanosized

is having a size measured in nanometers.

As a noun nanoregion is

a nanosized region.

As nouns the difference between region and nanoregion

is that region is region; area while nanoregion is a nanosized region.

As an adjective nanosized

is having a size measured in nanometers.

As a noun nanotubule is

a nanosized tubule.

As nouns the difference between tubule and nanotubule

is that tubule is a small pipe or fistular body; a little tube while nanotubule is a nanosized tubule.

As nouns the difference between mass and necromass

is that mass is march while necromass is the mass of dead timber in a forest etc.