Contents. List of Contributors. Introduction to the Series (S.L. Bonting). The Effects of Prolonged Spaceflights on the Human Body (A.I. Grigoriev, and A.D. Egorov). Skeletal Responses to Spaceflight (E.R. Morey-Holton and S.B. Arnaud). Gravity Effects on Reprodution, Development, and Aging (J. Miquel and K.A. Souza). Neurovestibular Physiology in RSH (S. Watanabe, A. Takabayashi, M. Tanaka, and D. Yangihara). Gravity Perception and Circumnutation in Plants (A.H. Brown). Development of Higher Plants under Altered Gravitational Conditions (A. Merkys and R. Laurinavicius). Gravity Effects on Single Cells: Techniques, Findings, and Theory (A. Cogoli and F.K. Gmunder). Protein Crystal Growth in Space (L.J. DeLucas and C.E. Bugg). Facilities for Animal Research in Space (S.L. Bonting, J.S. Kishiyama, and R.D. Arno). Index.