TY - RPRT TI - Gender differences in organ density in a rat simulated microgravity model. AU - Christopher Ryan Pettis AU - Mark Lee Witten PY - 2004 DO - 10.1016/s0094-5765(02)00289-8 UR - https://pubmed.ncbi.nlm.nih.gov/14606502/ ID - 14606502 ER -