Medical application of nanotechnology is referred as nanomedicine. Potential applications include in biological devices, nanomaterials, nanoelectronic biosensors, molecular nanotechnology including biological machines. Some of the recent problems for nanomedicines include realizing the issues of toxicity and the impact on environment, of nanoscale materials (i.e., on the scale of 0.1 to 100 nm). Various functionalities can be added further to nanomaterials by amalgamating them with biological structures or molecules. Usually, the size of nanomaterials is very similar to that of the majority of biological structures and molecules; hence, nanomaterials can be functional for both in vitro and in vivo biomedical applications and research. Till now, the mixing of biology with nanomaterials has led to the progress in the fields of diagnostic devices, analytical tools, contrast agents, drug delivery vehicles, and physical therapy applications.
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