In rabbit,the function of the spleen is

What is the principal cation in human blood?

If a mother possesses only '$B$' antibodies (implying blood group '$A$') and the father has blood group '$O$',what will be the possible blood group$(s)$ of the child?

The $pH$ of human blood is:

Biological marriage of one of the following should be avoided:

Which of the following plasma proteins is involved in the coagulation of blood?