1. Serum vitamin D metabolites are not related to growth rate, bone mineral content, or serum alkaline phosphatase in male puberty

   • Søren Krabbe
   • Claus Christiansen
   • Lotte Hummer

   Clinical Investigation Pages: 127 - 129

2. Effects of prostacyclin and prostaglandin E₁ (PGE₁) on bone resorption in the presence and absence of parathyroid hormone

   • H. H. Conaway
   • L. F. Diez
   • L. G. Raisz

   Laboratory Investigations Pages: 130 - 134

3. Type I collagen shows a specific binding affinity for bovine dentin phosphophoryn

   • W. G. Stetler-Stevenson
   • Arthur Veis

   Laboratory Investigations Pages: 135 - 141

4. Mineralized bone nodules formedin vitro from enzymatically released rat calvaria cell populations

   • C. G. Bellows
   • J. E. Aubin
   • M. E. Antosz

   Laboratory Investigations Pages: 143 - 154

5. Parathyroid hormone stimulates proliferation of chondroprogenitor cellsIn vitro

   • D. Lewinson
   • M. Silbermann

   Laboratory Investigations Pages: 155 - 162

6. Altered parathyroid hormone- or calcitonin-stimulated adenosine 3′,5′-monophosphate release by isolated perfused bone from glucocorticoid-treated rats

   • Toshitsugu Sugimoto
   • Masaaki Fukase
   • Takuo Fujita

   Laboratory Investigations Pages: 163 - 169

7. Endocytosis precedes dissolution of basic calcium phosphate crystals by murine macrophages

   • Jeanna L. Owens
   • Herman S. Cheung
   • Daniel J. McCarty

   Laboratory Investigations Pages: 170 - 174

8. Mixed-sclerosing-bone-dystrophy: 42-year follow-up of a case reported as osteopetrosis

   • Roberto Pacifici
   • William A. Murphy
   • Michael P. Whyte

   Case Report Pages: 175 - 185

9. Annoucements

   Announcement Pages: 186 - 186