Costa RicaWeather: The state of the ATMOSPHERE over minutes to months.Forecasting: The prediction or projection of the nature of future problems or existing conditions based upon the extrapolation or interpretation of existing scientific data or by the application of scientific methodology.Central AmericaRain: Water particles that fall from the ATMOSPHERE.Climate: The longterm manifestations of WEATHER. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Indians, Central American: Individual members of Central American ethnic groups with ancient historic ancestral origins in Asia. Mexican Indians are not included.IllinoisPoaceae: A large family of narrow-leaved herbaceous grasses of the order Cyperales, subclass Commelinidae, class Liliopsida (monocotyledons). Food grains (EDIBLE GRAIN) come from members of this family. RHINITIS, ALLERGIC, SEASONAL can be induced by POLLEN of many of the grasses.Manitoba: A province of Canada, lying between the provinces of Saskatchewan and Ontario. Its capital is Winnipeg. Taking its name from Lake Manitoba, itself named for one of its islands, the name derived from Algonquian Manitou, great spirit. (From Webster's New Geographical Dictionary, 1988, p724 & Room, Brewer's Dictionary of Names, 1992, p332)Poa: A plant genus of the family POACEAE that contains the Poa p Ia allergen and allergen C KBGP.Cornus: A plant genus of the family CORNACEAE. It is widely cultivated for the attractive flowers.Aphids: A family (Aphididae) of small insects, in the suborder Sternorrhyncha, that suck the juices of plants. Important genera include Schizaphis and Myzus. The latter is known to carry more than 100 virus diseases between plants.Asteraceae: A large plant family of the order Asterales, subclass Asteridae, class Magnoliopsida. The family is also known as Compositae. Flower petals are joined near the base and stamens alternate with the corolla lobes. The common name of "daisy" refers to several genera of this family including Aster; CHRYSANTHEMUM; RUDBECKIA; TANACETUM.Arvicolinae: A subfamily of MURIDAE found nearly world-wide and consisting of about 20 genera. Voles, lemmings, and muskrats are members.Pair Bond: In animals, the social relationship established between a male and female for reproduction. It may include raising of young.Zinc Radioisotopes: Unstable isotopes of zinc that decay or disintegrate emitting radiation. Zn atoms with atomic weights 60-63, 65, 69, 71, and 72 are radioactive zinc isotopes.Peromyscus: A genus of the subfamily SIGMODONTINAE consisting of 49 species. Two of these are widely used in medical research. They are P. leucopus, or the white-footed mouse, and P. maniculatus, or the deer mouse.ConnecticutPaternal Behavior: The behavior patterns associated with or characteristic of a father.Lolium: Common member of the Gramineae family used as cattle FODDER. It harbors several fungi and other parasites toxic to livestock and people and produces allergenic compounds, especially in its pollen. The most commonly seen varieties are L. perenne, L. multiflorum, and L. rigidum.Vaginal Birth after Cesarean: Delivery of an infant through the vagina in a female who has had a prior cesarean section.Cesarean Section: Extraction of the FETUS by means of abdominal HYSTEROTOMY.Festuca: A plant genus of the family POACEAE. The common name of fescue is also used with some other grasses.Cephalopelvic Disproportion: A condition in which the HEAD of the FETUS is larger than the mother's PELVIS through which the fetal head must pass during a vaginal delivery.Salvia: A genus in the mint family (LAMIACEAE).Tragopogon: A plant genus of the family ASTERACEAE. The root and shoots have been used for food.Molecular Sequence Annotation: The addition of descriptive information about the function or structure of a molecular sequence to its MOLECULAR SEQUENCE DATA record.Animal Shells: The hard rigid covering of animals including MOLLUSCS; TURTLES; INSECTS; and crustaceans.Snails: Marine, freshwater, or terrestrial mollusks of the class Gastropoda. Most have an enclosing spiral shell, and several genera harbor parasites pathogenic to man.PakistanOman: A sultanate on the southeast coast of the Arabian peninsula. Its capital is Masqat. Before the 16th century it was ruled by independent emirs but was captured and controlled by the Portuguese 1508-1648. In 1741 it was recovered by a descendent of Yemen's imam. After its decline in the 19th century, it became virtually a political and economic dependency within the British Government of India, retaining close ties with Great Britain by treaty from 1939 to 1970 when it achieved autonomy. The name was recorded by Pliny in the 1st century A.D. as Omana, said to be derived from the founder of the state, Oman ben Ibrahim al-Khalil. (From Webster's New Geographical Dictionary, 1988, p890; Oman Embassy, Washington; Room, Brewer's Dictionary of Names, 1992, p391)Rhizome: Root-like underground horizontal stem of plants that produces shoots above and roots below. Distinguished from true roots which don't have buds and nodes. Similar to true roots in being underground and thickened by storage deposits.Time Factors: Elements of limited time intervals, contributing to particular results or situations.North AmericaAmaranthaceae: A family of flowering plants in the order Caryophyllales, with about 60 genera and more than 800 species of plants, with a few shrubs, trees, and vines. The leaves usually have nonindented edges.Agrostis: A plant genus of the family POACEAE.Preoptic Area: Region of hypothalamus between the ANTERIOR COMMISSURE and OPTIC CHIASM.Andropogon: A plant genus of the family POACEAE. The common name of bluestem is also used for other plants in this family. Andropogon nardus has been reclassified as CYMBOPOGON nardus and Andropogon zizanioides to VETIVERIA zizanioides.IndianaArabis: A plant genus of the family BRASSICACEAE. Member species are ornamentals grown for their numerous small white, yellow, pink, or purplish flowers.Crassostrea: A genus of oysters in the family OSTREIDAE, class BIVALVIA.Plant Weeds: A plant growing in a location where it is not wanted, often competing with cultivated plants.Ostreidae: A family of marine mollusks in the class BIVALVIA, commonly known as oysters. They have a rough irregular shell closed by a single adductor muscle.Herbicide Resistance: Diminished or failed response of PLANTS to HERBICIDES.Plants, Genetically Modified: PLANTS, or their progeny, whose GENOME has been altered by GENETIC ENGINEERING.Plant Leaves: Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed)Plant Proteins: Proteins found in plants (flowers, herbs, shrubs, trees, etc.). The concept does not include proteins found in vegetables for which VEGETABLE PROTEINS is available.Plant Roots: The usually underground portions of a plant that serve as support, store food, and through which water and mineral nutrients enter the plant. (From American Heritage Dictionary, 1982; Concise Dictionary of Biology, 1990)Genes, Plant: The functional hereditary units of PLANTS.Waiting Lists: Prospective patient listings for appointments or treatments.