MNS antigen system: The MNS antigen system is a human blood group system based upon two genes (glycophorin A and glycophorin B) on chromosome 4. There are currently 46 antigens in the system,Daniels G, Flegel WA, Fletcher A, et al.RHD (gene): Rh blood group, D antigen also known as Rh polypeptide 1 (RhPI) or cluster of differentiation 240D (CD240D) is a protein that in humans is encoded by the RHD gene.ABO blood group system: The ABO blood group system is the most important blood type system (or blood group system) in human blood transfusion. Found on platelets, epithelium, and cells other than erythrocytes, AB antigens (as with other serotypes) can also cause an adverse immune response to organ transplantation.P antigen system: P antigen system is a human blood group system based upon the A4GALT and B3GALNT1 genes on chromosome 22.Percy Kidd: Percy Marmaduke Kidd (13 February 1851 — 21 January 1942) was an English doctor. He was born in Blackheath and died in Chalfont St.Glycophorin C: Glycophorin C (GYPC; CD236/CD236R; glycoprotein beta; glycoconnectin; PAS-2') plays a functionally important role in maintaining erythrocyte shape and regulating membrane material properties, possibly through its interaction with protein 4.1.Indian blood group system: The Indian blood group system (In) is a classification of blood based on the presence or absence of inherited antigens that reside within the CD44 molecule that is expressed on the surface of blood cells. It is named so because 4% of the population in India possess it.Lutheran Hospital of Indiana: The Lutheran Hospital of Indiana, commonly known as Lutheran Hospital, is a medical facility in Fort Wayne, Indiana.Duffy antigen system: Duffy antigen/chemokine receptor (DARC), also known as Fy glycoprotein (FY) or CD234 (Cluster of Differentiation 234), is a protein that in humans is encoded by the DARC gene.Ficain: Ficain (, ficin, debricin, higueroxyl delabarre) is an enzyme that is derived from figs latex. It is of a family of proteases known as the cysteine endopeptidases, a group that also includes papain derived from papaya latex, bromelase (bromelain) extracted from pineapple stem, calpain, caspases, cathepsin B, and chymopapain.