Biologically

Biology is a natural science that is concerned with the study of life, its various forms and its function, how these organisms interact with each other and with the surrounding environment. The word biology in Greek is made up of two words: bio (βίος) meaning life. And loggia (-λογία) means science or study. Biology: the similarity of vegetation and animal cover on the edges of the African and American states, and the existence of the same fossil.

Branches of biology
Biology is an ancient science thousands of years old and modern biology began in the nineteenth century. This science has multiple branches. Among them are:

Anatomy
Botany
Biochemia
Biogeography
Biofisia
Cytology or cell science
Ecology or environmental science

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It is fair to say that embryonic stem (ES) cells have taken their place beside the
human genome project as one of the most discussed biomedical issues of the day. It
also seems certain that as this millennium unfolds we will see an increase in scientific
and ethical debate about their potential utility in society.
On the scientific front, it is clear that work on ES cells has already generated new
possibilities and stimulated development of new strategies for increasing our understanding of cell lineages and differentiation. It is not naïve to think that, within a
decade or so, our overall understanding of stem cell biology will be as revolutionized
as it was when the pioneering hemopoietic stem cell studies of Till and McCulloch in
Toronto captured our imaginations in 1961. With it will come better methods for ES
and lineage-specific stem cell identification, maintenance, and controlled fate
selection. Clearly, ES cell models are already providing opportunities for the establishment of limitless sources of specific cell populations. In recognition of the growing excitement and potential of ES cells as models for both the advancement of basic
science and future clinical applications, I felt it timely to edit this collection of protocols (Embryonic Stem Cells) in which forefront investigators would provide detailed
methods for use of ES cells to study various lineages and tissue types