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   Platelet
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| appearance as argument number 1 |
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| (documentation Platelet EnglishLanguage "Platelets, also called thrombocytes, are a component of blood whose function (along with the coagulation factors) is to react to bleeding from blood vessel injury by clumping, thereby initiating a blood clot. Platelets have no cell nucleus; they are fragments of cytoplasm that are derived from the megakaryocytes of the bone marrow, which then enter the circulation. Circulating inactivated platelets are biconvex discoid (lens-shaped) structures, 2–3 µm in greatest diameter. Activated platelets have cell membrane projections covering their surface. Platelets are found only in Mammals, whereas in other vertebrates (e.g. Birds, amphibians), thrombocytes circulate as intact mononuclear cells.") | Mid-level-ontology.kif 10203-10215 | |
| (subclass Platelet BloodCell) | Mid-level-ontology.kif 10201-10201 | Thrombocyte is a subclass of blood cell |
| appearance as argument number 2 |
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| (termFormat EnglishLanguage Platelet "platelet") | Mid-level-ontology.kif 10216-10216 | |
| (termFormat EnglishLanguage Platelet "thrombocyte") | Mid-level-ontology.kif 10217-10217 |
| antecedent |
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| (=> (instance ?P Platelet) (exists (?B ?M) (and (instance ?B Blood) (instance ?M Mammal) (part ?B ?M) (part ?P ?B)))) |
Mid-level-ontology.kif 10226-10233 |
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| consequent |
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| (=> (instance ?C Clotting) (exists (?P) (and (instance ?P Platelet) (instrument ?C ?P)))) |
Mid-level-ontology.kif 10219-10224 |
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