Answer: Thrombocytes
Explanation:
  Platelets are also known as thrombocytes as, the health care taker called the clot as thrombus. Basically, the platelets are obtained in the bone marrow with the help of white and the red blood cells. 
When there is uncontrolled numbers of the platelets present in your blood amount then the term is known as thrombocytosis condition. Large amount of the plates caused many problems like heat attack and clotting in the vessels of the blood.
 
        
             
        
        
        
Grey seals breed in habitats where disturbance is kept to a minimal, like rocky shores, ice flows and islands. They feed on cold open waters. When pups are given birth in early winter or late autumn, their skins are white with yellowish tint. They are relatively helpless and rely on their mother's milk for the first few weeks after birth. They deposit a thick layer of blubber that will protect and allow them to adapt to the cold to sustain them when they will hunt for themselves. 
        
                    
             
        
        
        
Administer varicella vaccine to the health 6-year old child (who does not have evidence of immunity to varicella) was exposed to a confirmed case of varicella 2 days ago. 
Explanation:
It is seen that if a child receives varicella vaccine between 3 to 5 days of exposure, he is safe as disease will not appear in him and would be saved for future infections.
Varicella vaccine is given for prevention against small pox. It is expected once immunised with varicella body will produce antibodies for a span of twenty years or more.