“…Or the E/e antigens may be lacking, while the C/c antigens are present, although weaker than normal, as in D(CW)- [9,22] and D(c)- [21] ; the D(C)-complex has not yet been described. There may, furthermore, be a reduced strength of the C/c as well as the E/e antigens, as in d(C) (e) [1], D(C) (e) [19,4], d(c) (e) [15,3], and d(C) (E) [23] …”