Assertion: mitral valve | /r/MadeOf | even 4 flaps
Facets:
Source sentences:
text: In some individuals, it can also be found that the tricuspid valve is consisting of 2, or even 4 flaps instead of the usual 3 flaps.
text: It can also be seen in some cases that the tricuspid valve consists of two or even four flaps instead of three.