1 “... 1901). Therefore, we should be able to find immediate conditions, dependencies and rules determining...”

2 “... these aspects are affected by the reproductive biology of birds, and studies have therefore been carried out...”

3 “... was therefore conceived as a basic textbook on the regulation and action of intracellular signal molecules...”

4 “.... Many of the images shown in the atlas would not be available without performing autopsies and therefore...”

5 “... be considered it is necessary to have some idea of what constitutes a cortex. Therefore, in the first part...”

6 “... understanding of the molecular mechanisms within muscle cells is therefore important to many areas of biological...”

7 “.... It is timely, therefore, that in 1975 a group of young and active sci­ entists and clinicians concerned...”

8 “... remains therefore unexplained supposing that the sources of variation due to heritability...”

9 “... underestimated. At­ tempt has been made, therefore, to present sufficient background informa­ tion necessary...”

10 “... may not be stressed here. Therefore, before you begin your review, please examine the entire manual...”

11 “... has turned out to be far more complex than previously be­ lieved. It was found useful, therefore...”

12 “... in the field of electron microscopy. Therefore, although the various chapters consist of individual topics...”

13 “... of the cells, and these have produced some valuable results. Still others are to be discovered. Therefore...”

14 “... problems at the ovarian level are related to follicles. Therefore, a thorough understanding of the biology...”

15 “... and general readers can vary considerably, making it difficult therefore to cater for all types of audience...”

16 “... are to be discovered. Therefore, the purpose of this open-end treatise is to acquaint the reader with some of the basic...”

17 “... proteins, nucleic acids and lipids. It is therefore no surprise that all biological organisms have evolved...”

18 “... of the subject in its entirety. I am, therefore, fortu­ nate in having colleagues who as acknowledged experts...”