1. Bone strength: The bottom line

   • Thomas A. Einhorn

   Editorial Pages: 333 - 339

2. Minimal levels of serum estradiol prevent postmenopausal bone loss

   • Jean Yves Reginster
   • Nathalie Sarlet
   • Paul Franchimont

   Clinical Investigations Pages: 340 - 343

3. Measurement of estrogen and progesterone receptors in abnormal human parathyroid tissue

   • Andrew W. Saxe
   • Glenn W. Gibson
   • Phyllis Gimotty

   Clinical Investigations Pages: 344 - 347

4. Bone marrow plays a role in bone metabolism: Histomorphometry of iliac bone in postmenopausal women

   • Toru Hirano
   • Katsuro Iwasaki

   Clinical Investigations Pages: 348 - 351

5. Comparative assessment of bone mineral density of the forearm using single photon and dual X-ray absorptiometry

   • Jeri W. Nieves
   • Felicia Cosman
   • Robert Lindsay

   Clinical Investigations Pages: 352 - 355

6. Isolation and characterization of human embryonic osteoblasts

   • Adriana Oliva
   • Giovanni Marrone
   • Vincenzo Zappia

   Clinical Investigations Pages: 356 - 362

7. Nacre initiates biomineralization by human osteoblasts maintained In Vitro

   • Caroline Silve
   • Evelyne Lopez
   • Gérard Couly

   Clinical Investigations Pages: 363 - 369

8. Regulation of ornithine decarboxylase by parathyroid hormone in osteoblastic cell systems

   • Su-Li Cheng
   • Aurora Fausto
   • Louis V. Avioli

   Laboratory Investigations Pages: 370 - 375

9. Characteristics of steroid hormone receptors in cultured MC3T3-E1 osteoblastic cells and effect of steroid hormones on cell proliferation

   • Akihiro Masuyama
   • Yasuyoshi Ouchi
   • Hajime Orimo

   Laboratory Investigations Pages: 376 - 381

10. Solubilization of functional receptors for parathyroid hormone and parathyroid hormone-related peptide from clonal rat osteosarcoma cells, ROS17/2.8

    • Susumu Uneno
    • Takao Yamamuro
    • Gino V. Segre

    Laboratory Investigations Pages: 382 - 386

11. Interactions of tumor necrosis factor with local and systemic factors in fetal rat limb bones

    • Geetha Shankar
    • Paula H. Stern

    Laboratory Investigations Pages: 387 - 392

12. Primary and secondary culture of rat ameloblasts in serum-free medium

    • Akiko Kukita
    • Hidemitsu Harada
    • Kojiro Kurisu

    Laboratory Investigations Pages: 393 - 398

13. Announcements

    Announcement Pages: 399 - 399

14. Errata

    Erratum Pages: 400 - 400