Gersh, I., and Catchpole, H.R.: The Organization of Ground Substance and Basement Membrane, and Its Significance in Tissue Injury, Disease and Growth, Am. J. Anat. 85: 457, 1949.
2.
Joseph, N.R., Engel, M.B., and Catchpole, H.R.: Interaction of Ions and Connective Tissue , Biochem. et Biophys. Acta8: 575, 1952.
3.
Idem: Homeostasis of Connective Tissues. II. Potassium-Sodium Equilibrium, Arch. Path.58: 40, 1954.
4.
Ziskin, D.E.: Effects of Certain Hormones on Gingival and Oral Mucous Membranes, J. A. D. A. 26: 422, 1938.
5.
Engel, M.B.: Hormonal Gingivitis, J. A. D. A. 44: 691, 1952.
6.
Ziskin, D.E., and Nesse, G.J.: Pregnancy Gingivitis; History, Classification, Etiology, Am. J. Orthodont. and Oral Surg. (Oral Surg. Sect.)32: 390, 1946.
7.
Maier, A.W., and Orban, B.: Gingivitis in Pregnancy, Oral Surg., Oral Med., and Oral Path . 2: 334, 1949.
Catchpole, H.R. , Joseph, N.R., and Engel, M.B.: The Action of Relaxin on the Pubic Symphysis of the Guinea Pig, Studied Electrometrically, J. Endocrinol . 8: 377, 1952.
10.
Steck, I.E. , Montgomery, M.M., Reed, C.I., and Joseph, N.R.: Influence of ACTH on Differences of Potential Between Synovial Fluid and Skin in Rheumatoid Arthritis, J. Appl. Physiol. 3: 84, 1950.
11.
Engel, M.B. : Water Soluble Mucoproteins of the Gingiva, J. D. Res. 32: 779, 1953.
12.
Perl, E., and Catchpole, H.R.: Changes Induced in the Connective Tissue of the Pubic Symphysis of the Guinea Pig With Estrogen and Relaxin, Arch. Path. 50: 233, 1950.
13.
Muhlemann, H.R.: Periodontometry, a Method for Measuring Tooth Mobility, Oral Surg., Oral Med., and Oral Path. 4: 1220, 1951.
