| D007854 |
Lead |
A soft, grayish metal with poisonous salts; atomic number 82, atomic weight 207.2, symbol Pb. |
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| D009688 |
Nuclear Reactors |
Devices containing fissionable material in sufficient quantity and so arranged as to be capable of maintaining a controlled, self-sustaining NUCLEAR FISSION chain reaction. They are also known as atomic piles, atomic reactors, fission reactors, and nuclear piles, although such names are deprecated. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) |
Nuclear Reactor,Reactor, Nuclear,Reactors, Nuclear |
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| D011879 |
Radiotherapy Dosage |
The total amount of radiation absorbed by tissues as a result of radiotherapy. |
Dosage, Radiotherapy,Dosages, Radiotherapy,Radiotherapy Dosages |
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| D011882 |
Radiotherapy, High-Energy |
Radiotherapy using high-energy (megavolt or higher) ionizing radiation. Types of radiation include gamma rays, produced by a radioisotope within a teletherapy unit; x-rays, electrons, protons, alpha particles (helium ions) and heavy charged ions, produced by particle acceleration; and neutrons and pi-mesons (pions), produced as secondary particles following bombardment of a target with a primary particle. |
Megavolt Radiotherapy,High-Energy Radiotherapy,Radiotherapy, Megavolt,High Energy Radiotherapy,Radiotherapy, High Energy |
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| D004601 |
Elementary Particles |
Individual components of atoms, usually subatomic; subnuclear particles are usually detected only when the atomic nucleus decays and then only transiently, as most of them are unstable, often yielding pure energy without substance, i.e., radiation. |
Baryons,Fundamental Particles,Baryon,Elementary Particle,Fundamental Particle,Particle, Elementary,Particle, Fundamental,Particles, Elementary,Particles, Fundamental |
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| D004938 |
Esophageal Neoplasms |
Tumors or cancer of the ESOPHAGUS. |
Cancer of Esophagus,Esophageal Cancer,Cancer of the Esophagus,Esophagus Cancer,Esophagus Neoplasm,Neoplasms, Esophageal,Cancer, Esophageal,Cancer, Esophagus,Cancers, Esophageal,Cancers, Esophagus,Esophageal Cancers,Esophageal Neoplasm,Esophagus Cancers,Esophagus Neoplasms,Neoplasm, Esophageal,Neoplasm, Esophagus,Neoplasms, Esophagus |
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| D006801 |
Humans |
Members of the species Homo sapiens. |
Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man |
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