You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following is the finding in lymphoid tissues in individual with common variable hypogammaglobulinemia and explain in detail?
Ref Robbins 8/e p233,9/e p241 Making a definitive diagnosis of primary hypogammaglobulinemia There is no single diagnostic test; CVID is a diagnosis of exclusion. Laboratory testing shows hypogammaglobulinemia (low IgG plus either low IgA or IgM, or both) and low specific antimicrobial antibody responses despite immunization.