Probe:	ActR-I cDNA2
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography
Assay notes:	The authors state that the in situ results with this probe were comparable to the results obtained with probe: ActR-I cDNA1 (MGI:3043554) as shown in assay: MGI:3043586. The majority of the data were not shown.

Structure	Level	Pattern	Image	Note
TS20: shoulder mesenchyme	Present		6C
TS20: tongue mesenchyme	Present		6C
TS20: head mesenchyme	Present	Regionally restricted	6C	Expression is in the mesenchyme of the snout.

Structure	Level	Pattern	Image	Note
TS20: shoulder mesenchyme	Present		6D
TS20: stomach mesenchyme	Present		6D
TS20: tongue mesenchyme	Present		6D
TS20: head mesenchyme	Present	Regionally restricted	6D	Expression is in the mesenchyme of the snout.
TS20: axial skeleton	Present	Regionally restricted	6D	Expression is in the intervertebral disks.
TS20: stomach epithelium	Absent		6D

Structure	Level	Pattern	Image	Note
TS20: arterial system	Present
TS20: cerebral cortex	Present
TS20: endocardial cushion	Present
TS20: endolymphatic sac	Present
TS20: hypothalamus	Present
TS20: lung mesenchyme	Present
TS20: neurohypophysis infundibulum	Present
TS20: otic capsule	Present
TS20: outer ear	Present
TS20: rib pre-cartilage condensation	Present
TS20: septum transversum	Present
TS20: skin	Present
TS20: tail sclerotome	Present
TS20: telencephalon	Present
TS20: thalamus	Present
TS20: tongue	Present
TS20: vestibulo-cochlear ganglion complex	Present
TS20: vibrissa	Present
TS20: cerebellum primordium	Present	Regionally restricted		Expression is in the junction.
TS20: pons	Present	Regionally restricted		Expression is in the junction.
TS20: medulla oblongata	Present	Regionally restricted		Expression is in the medullary raphe.
TS20: head mesenchyme	Present	Regionally restricted		Expression is in the condensations that form the outer table of the primitive ectomeninx.
TS20: skeletal muscle	Present	Regionally restricted		Expression is in the premuscle condensations in the oral region.
TS20: nasal septum mesenchyme	Present	Regionally restricted		Expression is in the precartilage primordium.
TS20: skeleton	Present	Regionally restricted		Expression is in the thoracic wall.
TS20: midbrain	Strong	Regionally restricted		Expression is at the bottom.
TS20: gonad	Weak
TS20: trigeminal ganglion	Weak
TS20: Meckel's cartilage	Absent
TS20: accessory nerve	Absent
TS20: esophagus	Absent
TS20: lung epithelium	Absent
TS20: medulla oblongata floor plate	Absent
TS20: metencephalon floor plate	Absent
TS20: midbrain roof plate	Absent
TS20: olfactory epithelium	Absent
TS20: posterior semicircular canal	Absent
TS20: trachea	Absent
TS20: vagus ganglion	Absent
TS20: venous system	Absent
TS20: vomeronasal organ	Absent
TS20: mandibular process	Absent			Expression is absent in the dental lamina.
TS20: maxillary process	Absent			Expression is absent in the dental lamina.