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Potential uses for nanorobotics in medicine include early diagnosis and targeted drug-delivery for cancer,biomedical instrumentation, surgery, pharmacokinetics, monitoring of diabetes and health care. To date, some examples of what nanotechnology has enabled include the development of improved imaging techniques for higher sensitivity in detection of cancer and illness, improved targeting of drug treatments, decrease in the number of adverse effects of chemotherapy, and the enhanced effectiveness of other antineoplastic therapies such as cryotherapy and ultrasound. Outside of medicine, nanotechnology is also fueling developoments in agriculture, energy, electronics, and many other fields. Nanotechnology provides a wide range of new technologies for developing customized means to optimize the delivery of pharmaceutical drugs. Today, harmful side effects of treatments such as chemotherapy are commonly a result of drug delivery methods that don't pinpoint their intended target cells accurately. Researchers at Harvard and MIT, however, have been able to attach special RNA strands, measuring nearly 10 nm in diameter, to nanoparticles, filling them with a chemotherapy drug. These RNA strands are attracted to cancer cells. When the nanoparticle encounters a cancer cell, it adheres to it, and releases the drug into the cancer cell. This directed method of drug delivery has great potential for treating cancer patients while avoiding negative effects. MRI-guided nanocapsules are one potential precursor to nanorobots. Another useful application of nanorobots is assisting in the repair of tissue cells alongside white blood cells. Recruiting inflammatory cells or white blood cells (which include neutrophil granulocytes, lymphocytes, monocytes, and mast cells) to the affected area is the first response of tissues to injury. Because of their small size, nanorobots could attach themselves to the surface of recruited white cells, to squeeze their way out through the walls of blood vessels and arrive at the injury site, where they can assist in the tissue repair process. Certain substances could possibly be used to accelerate the recovery. One of these devices currently under design is a nanorobot dubbed a respirocyte. This robot is equipped to have three functions as it travels through the bloodstream. First, collecting oxygen as it passes through the respiratory system for distribution throughout the bloodstream. Second, collecting carbon dioxide from tissues for release into the lungs. And finally, metabolizing circulating glucose to power its own functions These benefits include improved detection of pathology, minimally invasive intracranial monitoring, and pharmaceutical delivery, amongst many others Nanotechnology has already shown much promise in improving the management of cancer. Increasing the sensitivity of cancer imaging tools, overcoming drug resistance, and improved treatment of metastasis are some examples of nanoparticle technology's increasing role. There have also been some promising developments in the subfield of nanorobotics for the treatment of cancer.