rename EHDAA2:0001113 'mesenchyme'?

[cmungall]

This is an odd class:

[Term]
id: EHDAA2:0001113
name: mesenchyme
is_a: CARO:0000054  ! anatomical group
relationship: develops_from EHDAA2:0001128 ! mesoderm
relationship: ends_at CS20 ! CS20
relationship: part_of EHDAA2:0000002 ! human embryo
relationship: starts_at CS07 ! CS07

Note the partonomy (embryo - not organism) and timing (CS7->)

Contrast with:

[Term]
id: AEO:0000145
name: mesenchymal tissue
def: "A group of not-yet-terminally-differentiatied cells that can pack in three dimensions." [AEO:JB]
is_a: CARO:0000043  ! simple tissue

The EHDAA2 class presumably refers to the mereological sum of all mesenchymal tissue in the embryo. It starts at CS07, but there is mesenchyme in the conceptus before this stage. (e.g. chorionic mesenchyme - which does not trace any kind of path up to EHDAA2 mesenchyme)

It has parts:

• df EHDAA2:0000830 ! inner cell mass
  • df EHDAA2:0000444 ! epiblast
    • df EHDAA2:0001128 ! mesoderm
      • df EHDAA2:0001113 ! mesenchyme
        • po EHDAA2:0000732 ! head mesenchyme
        • po EHDAA2:0001120 ! mesenchyme from somatopleure
        • po EHDAA2:0001122 ! mesenchyme from splanchnopleure
        • po EHDAA2:0002092 ! trunk and cervical mesenchyme

Perhaps this class should be renamed "entire embryonic mesenchyme"?