#latex  a milky exudate from certain plants that coagulates on exposure to air
  supertype:  exudate  a substance that oozes from animal or plant pores
  subtype:  India_rubber__rubber__gum_elastic__caoutchouc  latex from trees (especially trees of the genera Hevea and Ficus)
     subtype:  foam_rubber  spongy rubber; made by introducing air bubbles before vulcanization
     subtype:  crepe_rubber__creperubber  crude natural rubber; used mainly for shoe soles
     subtype:  synthetic_rubber__syntheticrubber  any of various synthetic materials that resemble rubber
        subtype:  silicone_rubber  made from silicone elastomers; retains flexibility resilience and tensile strength over a wide temperature range
        subtype:  neoprene  resistant to oils and aging; used in waterproof products
        subtype:  Buna  made by polymerizing butadiene
        subtype:  Butyl  made by polymerizing isobutylene
     subtype:  cold_rubber  a rubber made at low temperatures (5 degrees Centigrade) which is tougher than conventional rubber and is often used in car tires
     subtype:  hard_rubber__vulcanite__ebonite  a hard nonresilient rubber formed by vulcanizing natural rubber
     subtype:  Para_rubber  a type of South American rubber

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