Antibody:	anti-PDGF-AA
Detection system:	Biotinylated secondary antibody/[Strept]avidin coupled to alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS20: dorsal root ganglion	Present		5A
TS20: spinal cord	Present		5A
TS20: trunk musculature	Present	Regionally restricted	5A	Expressed in the myotomal premuscle condensation.

Structure	Level	Pattern	Image	Note
TS20: trophoblast giant cell	Present	Regionally restricted	5B	Expressed in the interface between the maternal decidua and the placental trophoblasts.
TS28: decidua	Present	Regionally restricted	5B	Expressed in the interface between the maternal decidua and the placental trophoblasts.
TS20: blood	Present	Regionally restricted	5B	Expressed in the nucleated fetal red blood cells within the placenta.

Structure	Level	Pattern	Image	Note
TS20: yolk sac visceral endoderm	Present	Regionally restricted	5C	Expressed in the apical surface of the columnar cells adjacent to the yolk sac cavity.
TS20: yolk sac mesenchyme	Strong	Regionally restricted	5C	Expressed in the cells within the blood islands.
TS20: labyrinthine zone	Moderate		5C	Expressed in the labyrinthine trophoblasts.
TS20: yolk sac parietal endoderm	Ambiguous		5C	Little or no expression.

Structure	Level	Pattern	Image	Note
TS20: yolk sac visceral endoderm	Present	Regionally restricted	5D	Expressed in the apical surface of the columnar cells adjacent to the yolk sac cavity.

Structure	Level	Pattern	Image	Note
TS23: yolk sac endoderm	Present	Regionally restricted	5E	Expressed in the endodermally derived columnar cells.

Structure	Level	Pattern	Image	Note
TS28: endometrium epithelium	Strong		5F
TS28: myometrium	Strong		5F
TS28: uterus stroma	Present		5F	Lower expression.