Table 1.

Densitometric analysis of the erythrocyte 4.1R protein

Index of patients	4.1R (%)*
IV:1 (RM23)	3.8 ± 0.10
IV :1 (RM16)	2.8 ± 0.35
IV :3 (RM15)	3.3 ± 0.20
IV:6 (RM13)	3.6 ± 0.25
Relatives
IV:2 (RM23)	3.2 ± 0.30
III:5 (RM23)	3.1 ± 0.20
V:2 (RM16)	3.0 ± 0.30
Controls (n = 21)	4.41 ± 0.40^

* Patient values expressed as mean ± SD (n = 3)

^Reference values expressed as mean ± SD; from n.21 healthy blood donors. The 4.1R content was considered low when it was below the reference values.