In the beginning of the last century, scientists proved the existence of 4 groups of blood. How are inherited by child blood group?
The Austrian scientist Karl Landsteiner, mixing the serum of some people with red blood cells taken from the blood of others, found that for certain combinations of red blood cells and serum is “bonding” – the clumping of red blood cells and clots, while others have not.
Exploring the structure of red blood cells, Landsteiner discovered the particular substance. He divided them into two categories, A and b, highlighting the third, where he carried the cage in which they were not. Later, his disciples – A. von Decastella and A. Storli – found cells containing the markers and type at the same time.
The studies have any system of division into groups of blood, which was called AVO. This system we still use today.
I ( 0 ) – blood group is characterized by the absence of antigens A and b;
II ( A) is installed in the presence of antigen A;
III ( AB ) – antigen;
IV( AB ) – antigens A and B.
This discovery made it possible to avoid losses if transfusions caused by incompatibility between the blood of patients Continue reading
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Desire love your child, to protect him from anxiety, to create a sense of security and the desire to constantly delight – it is the natural expression of the maternal instinct. In the first years of life the baby’s parents, both physically and psychologically, so mom and dad feel a great responsibility for everything that happens to him.
Often, however, love is inherent in man and woman by nature in relation to her child, becomes a dangerous border, and then mom and dad, consciously or not, begin to dominate the baby, and the baby turns into a little tyrant, exploiting the weaknesses of loved ones as a tool of manipulation over them. Overprotection and desire to fulfill all the whims of a child affects him negatively, so you must set some rules. and to demand from the child of their performance.
How to eliminate the blackmail
Almost everything we are sometimes violated certain rules: don’t go to work told the boss that you are sick, but actually just don’t want to go somewhere; we buy a bag of chips and a bottle of coke, even though I promised myself not to eat junk food; don’t brush our teeth before bedtime, because laziness and so on. Then why we say sharp «no» the request of the child with a chocolate bar on the way home or his desire to watch an interesting cartoon that started late?
Many Continue reading