Medicine and Health Sciences Commons^™

The Developmental Fine Structure Of Pacinian Corpuscles, Pedro B. Nava

Loma Linda University Electronic Theses, Dissertations & Projects

A preliminary light microscopic study of the mouse hind limb revealed a group of about 20 Pacinian corpuscles extending from the mid-region of the fibula to the tibio-fibular fusion strategically located for the possible sensing of bone-transmitted vibration.

The fine structure of the corpuscles is described in four stages: primordial or prenatal (19 and 20 days); early differentiation (1-8 days postnatal); differentiated corpuscle (9, 10, 12, 14 and 21 days postnatal); and adult (28 days old).

The corpuscles commence development during the 19th prenatal day. The corpuscle then consists of a nerve ending surrounded by sheath-cells which appear to be …

The Deoxythymidine Kinase-Deoxythymidylate Kinase Enzymes In Salmonella Potsdam And Escherichia Coli K12 Infected With Bacteriophage P3, James D. Kettering

Loma Linda University Electronic Theses, Dissertations & Projects

Metabolic alterations in bacterial hosts caused by virus infections have been studied for the last thirty years. The virulent T-even bacteriophages have been studied the most and have been shown to be responsible for the induction of a number of new, virus-specific enzymes that are necessary for successful phage growth. In addition, the activity of other host enzymes present prior to infection has been found to be increased by T-even infection. Temperate bacteriophages, being more difficult to work with than the virulent viruses, have not been studied as extensively. This is especially true for metabolic studies, since most temperate phage …

A Computerized Roentgenographic Cephalometric Study Of Hydrocephalus, Charles R. Henry Jr.

Loma Linda University Electronic Theses, Dissertations & Projects

A preliminary roentgenographic cephalometric investigation of twelve hydrocephalics has been conducted to consider the effects of increased intracranial pressure and enlarged neural mass on the craniofacial complex.

The Ricketts computerized analysis, utilizing both posterior-anterior and lateral cephalograms, and the Steiner and Tweed analyses, utilizing the lateral cephalogram, were used to compare the hydrocephalic to the norm.

The anterior cranial base was found to be significantly increased in length possibly due to the effects of hydrocephalus. The effects of hydrocephalus on the facial measurements were questionable in view of the fact that the significant findings of: 1) excessive inclination and protrusion …