| D007108 |
Immune Tolerance |
The specific failure of a normally responsive individual to make an immune response to a known antigen. It results from previous contact with the antigen by an immunologically immature individual (fetus or neonate) or by an adult exposed to extreme high-dose or low-dose antigen, or by exposure to radiation, antimetabolites, antilymphocytic serum, etc. |
Immunosuppression (Physiology),Immunosuppressions (Physiology),Tolerance, Immune |
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| D007814 |
Larva |
Wormlike or grublike stage, following the egg in the life cycle of insects, worms, and other metamorphosing animals. |
Maggots,Tadpoles,Larvae,Maggot,Tadpole |
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| D008675 |
Metamorphosis, Biological |
Profound physical changes during maturation of living organisms from the immature forms to the adult forms, such as from TADPOLES to frogs; caterpillars to BUTTERFLIES. |
Biological Metamorphosis,Biological Metamorphoses,Metamorphoses, Biological |
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| D011892 |
Rana catesbeiana |
A species of the family Ranidae (true frogs). The only anuran properly referred to by the common name "bullfrog", it is the largest native anuran in North America. |
Bullfrog,Bullfrogs,Rana catesbeianas,catesbeiana, Rana |
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| D012106 |
Research |
Critical and exhaustive investigation or experimentation, having for its aim the discovery of new facts and their correct interpretation, the revision of accepted conclusions, theories, or laws in the light of newly discovered facts, or the practical application of such new or revised conclusions, theories, or laws. (Webster, 3d ed) |
Research Priorities,Laboratory Research,Research Activities,Research and Development,Activities, Research,Activity, Research,Development and Research,Priorities, Research,Priority, Research,Research Activity,Research Priority,Research, Laboratory |
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| D000375 |
Aging |
The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time. |
Senescence,Aging, Biological,Biological Aging |
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| D000818 |
Animals |
Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. |
Animal,Metazoa,Animalia |
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| D001001 |
Anura |
An order of the class Amphibia, which includes several families of frogs and toads. They are characterized by well developed hind limbs adapted for jumping, fused head and trunk and webbed toes. The term "toad" is ambiguous and is properly applied only to the family Bufonidae. |
Bombina,Frogs and Toads,Salientia,Toad, Fire-Bellied,Toads and Frogs,Anuras,Fire-Bellied Toad,Fire-Bellied Toads,Salientias,Toad, Fire Bellied,Toads, Fire-Bellied |
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| D013934 |
Thymectomy |
Surgical removal of the thymus gland. (Dorland, 28th ed) |
Thymectomies |
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| D014181 |
Transplantation Immunology |
A general term for the complex phenomena involved in allo- and xenograft rejection by a host and graft vs host reaction. Although the reactions involved in transplantation immunology are primarily thymus-dependent phenomena of cellular immunity, humoral factors also play a part in late rejection. |
Immunology, Transplantation |
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