4121
This observation suggests that selection against cells expressing the Wiskott - Aldrich defect takes place in the hemopoietic system of the heterozygous female and offers a possible means of carrier detection in some women .
 Wiskott - Aldrich defect
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 Wiskott - Aldrich defect