The beginnings of human civili zation can be traced back to the time , ne- ly 12 ,000 years ago , when th e early humans gradually ch anged from a life of hunti

Plants are an important source of food and of valuable products for industry, agriculture and medicine. They are unique in many aspects of metabolic processes,

Plants are an important source of food and of valuable products for industry, agriculture and medicine. They are unique in many aspects of metabolic processes,

Considerable advances have been made in our understanding of the eukaryotic cell cycle at the molecular level over the past two decades or so, particularly in y