More than one year into a global pandemic, SARS-CoV-2 is now defined by variety of rapidly evolving variant lineages. Several FDA authorized molecular diagnostic tests have been impacted viral variation, while no reports variation affecting antigen test performance occurred to date. While determining the analytical sensitivity Quidel Sofia SARS Antigen FIA (Sofia 2), we uncovered high load spec...

Transcription directed by the human immunodeficiency virus type 2 long terminal repeat (HIV-2 LTR) responds to T-cell antigen receptor signaling. Agents that stimulate T-cell signaling pathways activated by the antigen receptor, such as phorbol ester, plant lectin, or anti-CD3 antibody treatment, have been shown to increase transcription directed by the HIV-2 LTR. In this study, we examine the ...

background: the aim of this study was to evaluate the possible use of biomphalaria alexandrina snail antigens in diagnosis of schistosomiasis mansoni using enzyme linked immunolectrotransfere blot (eitb). methods: s. mansoni adult worm crude antigens (awa), feet and visceral humps of b. alexandrina and bulinus truncatus were used. hyperimmune mice sera (his) versus each antigen were prepared fo...

Memory T cells are conventionally subdivided into central memory (T CM ) and effector EM cells. However, a new subset of named stem cell SCM has been recognized that possesses capabilities both including lymphoid homing performing roles through secretion cytokines such as interleukin-2 (IL-2) interferon-gamma (IFN-γ). The some biological properties stemness, antigen independency, high prolifera...