Lymph node - B-CLL containing many CD4 positive lymphocytes.

Lymph node - B-CLL containing numerous CD4 positive lymphocytes.

Kidney - Clear cell renal cell carcinoma containing only few CD4 positive lymphocytes.

Lymph node - Dense infiltrate of CD4 positive macrophages and lymphocytes in a Hodgkin's Lymphoma.

Lymph node - Diffuse large B-cell lymphoma containing a large number of strongly CD4 positive lymphocytes and also macrophages with moderate CD4 immunostaining.

Lymph node: Diffuse large B-cell lymphoma containing a limited number of strongly CD4 positive lymphocytes and also many macrophages with moderate CD4 immunostaining.

Lymph node - Follicular B cell lymphoma containing numerous CD4 positive lymphocytes.

Lymph node - Follicular B cell lymphoma showing lymphocytes with strong and macrophages with moderate CD4 immunostaining.

Lymph node - High grade T-cell lymphoma showing CD4 immunostaining of tumor cells.

Lymph node - Hodgkin's Lymphoma containing numerous lymphocytes with strong and macrophages with moderate intensity CD4 staining.

Lymph node - Hodgkin's Lymphoma showing a dense infiltration of CD4 positive lymphocytes.

Lymph node - Large cell anaplastic T-cell lymphoma showing intense CD4 immunostaining of tumor cells.

Lymph node - Mantle cell lymphoma containing a large number of CD4 positive lymphocytes.

Lymph node - Mantle cell lymphoma containing CD4 positive lymphocytes.

Kidney - Moderate intensity CD4 immunostaining of macrophages in a renal cell carcinoma. Few interspersed lymphocytes show stronger staining.

Kidney - Papillary renal cell carcinoma containing a small number of CD4 positive lymphocytes.

Kidney - Scattered CD4 positive lymphocytes in a clear cell renal cell carcinoma.