http://hdl.handle.net/1721.1/7782 http://hdl.handle.net/1721.1/42796 A study of variation in the shell of the marine gastropod, purpura lapillus Conant, Harold S Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Biology, 1900. MIT copy bound with: The behavior of the bacillus of typhoid fever in milk / Milton Weston Hall -- An investigation of certain bacterial fermentations occurring in sugar solutions / Arthur I. Kendall -- An investigation of the changes in blood pressure during mental work as measures by the sphygmomanometer / Anna B. Gallup. Includes bibliographical references. http://hdl.handle.net/1721.1/42580 Analysis of the role of the retinoblastoma susceptibility gene in murine development and tumorigenesis Williams, Bart O. (Bart Owens) Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1996. Includes bibliographical references. http://hdl.handle.net/1721.1/42579 Functional analysis of K-ras in the mouse by gene targeting Johnson, Leisa Kay Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1996. Vita. Includes bibliographical references (leaves 202-204). http://hdl.handle.net/1721.1/42563 Expression and function of proteoglycans in the nervous system Litwack, E. David (Ernest David) Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1995. Includes bibliographical references.