Which type of radiation has no mass and electric charge?

A pregnant woman is choking. You should perform:

A) chest thrusts. B) finger sweeps. C) abdominal thrusts. D) mouth-to-mouth resuscitation.

Which antibody is the most common cause of neonatal alloimmune thrombocytopenia?

a. Anti-HLA-DQ1 b. Anti-HLA-DQ2 c. Anti-HPA-1a d. Anti-HPA-1b