1. Where is the origin of the activator calcium in cardiac ventricular contraction?

   • M. Reiter
   • W. Vierling
   • K. Seibel

   Editorial Pages: 1 - 8

2. Basal blood pressure variability and reactivity of blood pressure to emotional stress in essential hypertension

   • W. Schulte
   • H. Neus
   • A. W. von Eiff

   Original Contributions Pages: 9 - 16

3. Thrombolytic effects of intracoronary streptokinase on canine coronary artery thrombosis

   • V. B. Fiedler

   Original Contributions Pages: 17 - 26

4. Quantification of ischemic stress during repeated coronary artery occlusion in the dog a method for validation of therapeutic effects

   • A. Hoeft
   • H. Korb
   • H. J. Bretschneider

   Original Contributions Pages: 27 - 37

5. Quantification of ischemic stress during repeated coronary artery occlusion in the dog A method for validation of therapeutic effects

   • H. Korb
   • A. Hoeft
   • H. J. Bretschneider

   Original Contributions Pages: 38 - 48

6. Subcellular origin of the surface fluorescence of reduced nicotinamide nucleotides in the isolated perfused rat heart

   • E. M. Nuutinen

   Original Contributions Pages: 49 - 58

7. Local myocardial perfusion and epicardial NADH-fluorescence after coronary artery ligation in the isolated guinea pig heart

   • R. Rösen
   • A. Marsen
   • W. Klaus

   Original Contributions Pages: 59 - 67

8. Role of some components of ischemia in the genesis of spontaneous ventricular arrhythmias

   • J. Senges
   • H. Seller
   • W. Kübler

   Original Contributions Pages: 68 - 74

9. Vulnerability of the right ventricle to cathodal, anodal, and bipolar stimulation at double diastolic threshold strength

   • T. Pop
   • N. Treese
   • W. Kasper

   Original Contributions Pages: 75 - 79

10. (³H)-spiroperidol binding sites in the rabbit splenic artery

    • F. Amenta
    • A. Cantagalli
    • G. Sancesario

    Original Contributions Pages: 80 - 85

11. Analysis of methodology for measurement of intramyocardial pressure

    • D. Nematzadeh
    • J. C. Rose
    • P. A. Kot

    Original Contributions Pages: 86 - 97

12. Effects of the cessation of training on left ventricular function in the racing greyhound

    • L. A. Pape
    • J. M. Rippe
    • M. Matthews

    Original Contributions Pages: 98 - 109

13. Selected enzyme activities in mouse cardiac muscle during training and terminated training

    • H. Kainulainen
    • E. Ahomäki
    • V. Vihko

    Original Contributions Pages: 110 - 123