TY - GEN AU - RAJEWSKY,B AU - BELLOCH-ZIMMERMANN,V AU - LOEHR,E AU - STAHLHOFEN,W TI - 226 RA IN HUMAN EMBRYONIC TISSUE, RELATIONSHIP OF ACTIVITY TO THE STAGE OF PREGNANCY, MEASUREMENT OF NATURAL 226 RA OCCURRENCE IN THE HUMAN PLACENTA SN - 0017-9078 PY - 1996///1201 KW - Animals KW - Bone and Bones KW - Female KW - Fetus KW - Humans KW - Maternal-Fetal Exchange KW - Placenta KW - Poultry KW - Pregnancy KW - Radium KW - Radon KW - Research N1 - Publication Type: Journal Article UR - https://doi.org/10.1097/00004032-196503000-00001 ER -