Assertion: arachnoid | /r/CapableOf | become identifiable
Facets:
value: in 6-month embryos
type: LOCATION
value: in 5-month
type: TEMPORAL
Source sentences:
text: The first description known to the present author of the embryological development of the meninges is that of Tiedemann (1816), who states that the pia and dura appear in 7- and 8-week-old human embryos, and the arachnoid becomes identifiable in 5-month and distinct in 6-month embryos.