Magnetic resonance imaging (MRI) has failed to distinguish between smaller gut regions and larger haemal sinuses in sea urchins (Echinodermata: Echinoidea).
A response to Ziegler A, Faber C, Mueller S, Bartolomaeus T: Systematic comparison and reconstruction of sea urchin (Echinoidea) internal anatomy: a novel approach using magnetic resonance imaging. BMC Biol 2008, 6: 33.
Holland
Nicholas D
ND
Ghiselin
Michael T
MT
D000818:Animals; D041981:Gastrointestinal Tract / Q000033:anatomy & histology; D008279:Magnetic Resonance Imaging; D012617:Sea Urchins / Q000033:anatomy & histology*