Postnatal death of motor neurons during the development of the brachial spinal cord of the rat.
D000367:Age Factors; D000818:Animals; D002452:Cell Count; D002454:Cell Differentiation; D002470:Cell Survival; D005260:Female; D009046:Motor Neurons / Q000166:cytology*; D009132:Muscles / Q000294:innervation; D011247:Pregnancy; D051381:Rats; D011919:Rats, Inbred Strains; D013116:Spinal Cord / Q000166:cytology*