Spontaneous embryo resorption in the mouse is triggered by embryonic apoptosis followed by rapid removal via maternal sterile purulent inflammation

Table 1 Ultrasonographic detection of resorptions and days of collection for histology

Mother ID	ID of 1st resorption	Detection (day)	Location in uterus horn	ID of 2nd resorption	Detection (day)	Location in uterus horn	ID of 3rd resorption	Detection (day)	Location in uterus horn	Collection (day)	Normal littermates collected
Early resorptions
1743	R1⁺ (Composite 2)	d7	E5 left	R2⁺(Composite 1)	d7	E1 right				d8	E4 left, E1 left
5015	R3⁺	d7	E1 right							d8	E4 right
1049	R4⁻	d7	E3 right							d8
2334	R5⁺	d8	E2 left		d8	E2 right				d9
8397	R7⁺	d8	E1 right							d9
2521	R8⁺	d8	E3 left							d9
Late resorptions
2034	R9⁻	d7	E1 left	R10⁻	d7	E2 left	R11⁺ (Composite 4)	d9	E5 left	d9
9859	R12⁺	d7	E2 right	R13⁺ (Composite 5)	d9	E1 right				d9	E1 left
0530	R14⁺	d8	E6 left	R15⁺ (Composite 3)	d9	E2 left				d10	E5 left, E4
7003	R16⁺ (Composite 6)	d9	E3 right	R17⁺	d9	E4 right				d11	E5 right, E2 right
5039	R18⁻	d10	E5 right							d10	E1 und E2
0512	R19⁻	d9	E2 left	R20⁻	d10	E3 left				d10	E3 right
Placentae
6119	R21⁺	d12	E4 left							d12	E3 left, E4 left
8207	R22⁺	d12	E3 left							d12	E2 right
5828	R23⁺	d13	E1 right							d13	E5 right

Table 1 and nomenclature correspond to Table 1 in [15]. Because of the complexity of histology more details were included such as original mother ID, embryo number and location in the uterine horn. This allows identification and comparability of the resorptions described. The resorptions underlying the compsite figures are indicated. Histology (+) and no histology (−) is indicated by uppercase symbols

ISSN: 1471-213X