Assertion: horseshoe crab's system | /r/HasProperty | open
Facets:
value: like that of a spider
type: OTHER
Source sentences:
text: The horseshoe crab’s circulatory system is open, like that of a spider.
text: Possessing an open circulatory system with no adaptive immune response, the horseshoe crab has survived through the ages by an “innate immunity” based on granular amebocytes, which comprise 99% of its hemocytes (Figure 2) (Shuster, 1978; Iwanaga et al., 1998; Medzhitov and Janeway, 2000).