1. Evaluation of tentacle regeneration as a biological assay inHydra

   • Valerie Raabe Flechtner
   • Georgia Elizabeth Lesh-Laurie
   • Michael Kenneth Abbott

   OriginalPaper Pages: 67 - 72

2. Electron microscope visualization of giant polysomes in sea urchin embryos

   • Arthur H. Whiteley
   • Shigeki Mizuno

   OriginalPaper Pages: 73 - 82

3. Fibronectin from the ovary of the sea urchin,Pseudocentrotus depressus

   • Mineo Iwata
   • Eizo Nakano

   OriginalPaper Pages: 83 - 86

4. Ribosomal RNA transcription during macronuclear development ofTetrahymena thermophila

   • Birgit Bro
   • Vagn Leick
   • Peter Bruns

   OriginalPaper Pages: 87 - 91

5. Use of lectins as probes for analyzing embryonic induction

   • Kenzo Takata
   • Kiyoko Yamazaki Yamamoto
   • Ruby Ozawa

   OriginalPaper Pages: 92 - 96

6. Cloning of cDNA sequences derived from poly(A)⁺ nuclear RNA ofXenopus laevis at different developmental stages: Evidence for stage specific regulation

   • Walter Knöchel
   • Dieter Bladauski

   OriginalPaper Pages: 97 - 102

7. Mobilization of newly synthesized RNAs into polysomes inXenopus laevis embryos

   • Koichiro Shiokawa
   • Yoshio Misumi
   • Kiyotaka Yamana

   OriginalPaper Pages: 103 - 110

8. Polyribosome formation and poly(A)-containing RNA in embryos of the sand dollar,Dendraster excentricus

   • John Spieth
   • Arthur H. Whiteley

   OriginalPaper Pages: 111 - 117

9. Normal and lectin-mediated aggregation in aDrosophila cell line

   • Florian A. Muckenthaler
   • Anne Fausto-Sterling

   Rapid Communication Pages: 118 - 122

10. The cleavage initiation site establishes the posterior pole of the hydrozoan embryo

    • Gary Freeman

    Rapid Communication Pages: 123 - 125