iO'^l 



SUBJECT INDEX 



Proboscis, snail — Continued 



naticids, 56 



tip, 57, 83 

 Progesterone, antler growth, 362 

 Prognosis, dental erosion, 118 

 Projection microradiography, 65 

 Proline incorporation, collagen pool, 



670 

 Proline injection, osteoporosis, 392 

 Proline metabolism 



bone matrix, 425 



metamorphosis of tadpole, 669 

 Proline tolerance test 



callus formation, 390 



osteoporosis, 390 

 Pronase, collagen digestion, 685 

 Pronghorn antelope, see Antelope 

 Propodial folds, 85 

 Propodial proboscis, 83 

 Propodium, 57 

 Prosobranchia, 56 

 Protease 



caries, 294 



reconstituted collagen, 685 



vitamin A effect, 628 

 Piotease activity 



collagenolytic, 686 



index, 687 



salivary glands, 294 

 Protective coat, collagen, 688, 690 

 Protective cuticular membrane, 109 

 Protective deposits, apatite surfaces, 



257 

 Protective interaction, organic surface 



films, 147, 220 

 Protective mechanism 



enamel surface, 220, 248 



polysaccharide storage, 277 

 Protective periostracum, 12 

 Protective property, pyruvate, 594 

 Protein breakdown, oxycorticosteroids, 



430 

 Protein metabolism, 428 

 Protein synthesis 



boring, 3 



thyroid compounds, 679 

 Proteinases 



see also Proteolytic enzymes 



metabolizing leaves, 94, 168 

 Proteins of enamel 



chelation compounds, 648 



proteolytic bacteria, 648 

 Proteolysis, 98 



dentin caries, 195 



dentin erosion, 168 



enamel caries, 171 



secondary, in caries, 207, 657 



secondary, in resorption, 505 



sheep's teeth, 94 



summary, 689 

 Proteolysis-chelation theory 



dental caries, 647 



hamster caries, 275 



insuperable inconsistency, 653 

 Proteolytic bacteria, 115 



proteins of enamel, 648 

 Proteolytic enzymes, 214 



see also Proteinases; Collagenase 



collagen digestion, 679, 685 



osteocvtes, 395 



sponges, 33 

 Protoplasmic processes, sponge, 33 

 Pseudo replicas, etched shells, 73, 77, 



81 

 Pseudopodia, sponge fragments, 32 

 Pseudopodial expansions, mesenchy- 

 mal cells, 33 

 Pseudostylachiis ostreophagiis, 4 

 PTE, see Parathyroid extract 

 Pudella mephisioplielis, 350 

 Pudii piidu, 350 

 Puffins, beaks, 340 

 Pulp canal, sheep's teeth, 156 

 Pulp stones, 309, 310 

 Pulpal abscesses, 294 

 Pulpal involvement, hibernation, 289 

 Pulpal odontoblasts, 98 

 Pus 



chemistry, 647 



solvent action, 647 

 Pyelonephritis, 427 

 Pyrophosphates, 639 

 Pyruvate, protective propert\-, 595 

 Pyruvate-to-lactate step, 600 

 Pyruvic acid-oxidase complex, para- 

 thyroid action, 586 



