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Mel Greaves discusses the mechanisms underlying transformation in B cell chronic lymphocytic leukemia, including a new study suggesting a role for BCR ligation driven by recognition of an antigenic component of common yeast and fungi.

Brief Definitive Report

Leukocyte cell–derived chemotaxin 2 enhances phagocytosis and bacterial killing of macrophages to improve the outcome of bacterial-induced sepsis.

Inactivation of Llgl1 enhances HSC self-renewal and fitness and is associated with unfavorable outcome in human AML.

The protease Sppl2a cleaves the N-terminal fragment of invariant chain (CD74) and is required for efficient B cell development and function.

Mice lacking activity of the intramembrane protease SPPL2A exhibit humoral immunodeficiency and lack mature B cell subsets.


The intramembrane protease SPPL2a cleaves the NTF of invariant chain (CD74), which is essential for normal trafficking of MHC class II–containing endosomes and thus for B cell development and function.

A subset of chronic lymphocytic leukemia with mutated IGHV-genes express BCRs specific for an antigenic determinant of yeast and filamentous fungi, β-(1,6)-glucan.

Hes1 is required for the development of hematopoietic stem cells in the mouse embryo through repression of Gata2.

Parp1 can replace c-Myc to promote induced pluripotent stem cell (iPSC) generation.

Hepatic NK cells eliminate HBV-specific T cells dependent on TRAIL and TRAIL-R2 interactions to limit antiviral immunity in chronic infection.

CtBP-interacting protein, exonuclease 1, and RecQ helicases contribute to the processing of DNA ends during double-strand break repairs in primary lymphocytes.

The nature of the immunoglobulin light chain affects peripheral B cell tolerance and autoreactivity.

Follicular T helper cells are the major reservoir for HIV infection and accumulate during chronic HIV infection.

Colony-stimulating factor 1 and IL-34 protect against and partially reverse neurodegeneration in mice in part via promoting CREB signaling.

Loss of CD98hc expression in young adult skin induces changes similar to those associated with aging, including improper skin homeostasis and epidermal wound healing.

Proteomics analysis identifies human serum proteins involved with innate immune responses, complement activation, and blood coagulation that are diagnostic for type 1 diabetes.

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