https://www.selleckchem.com/products/nd-630.html Legionella pneumophila is a Gram-negative intracellular bacterium and the cause of an atypical pneumonia in humans - legionnaire's disease. Immunological assessment of bacterial antigens clarifies the way that host may develop protection against the pathogen. Lipopolysaccharide (LPS) is the main antigen of Gram-negative bacteria but is less studied because of its carbohydrate nature. Here, we immunized mice with detoxified LPS in combination with immunogenic proteins and looked into the result of bacterial challenge. LPS of L. pneumophila was extracted by hot phenol-water method. Purified LPS was detoxified by sodium hydroxide alkaline procedure. BALB/c mice were immunized mainly with non-covalent combination of detoxified LPS (dLPS) and either of recombinant FlaA or PAL separately. Afterwards, specific serum IgG was assessed by ELISA. Mice were challenged intravenously with sublethal dose of L. pneumpphila then splenocytes were cultured. Cytokine responses of splenocytes were analyzed by ELISA. Polysac, Legionella detoxified LPS combination with recombinant FlaA and PAL effectively elicited Th-1 type cytokines and humoral responses against L. pneumophila in BALB/c mice. During the COVID-19 pandemic, surgical delays have been common for patients with ductal carcinoma in situ (DCIS) and early-stage estrogen receptor-positive (ER+) breast cancer, often in favor of neoadjuvant endocrine therapy (NET). To understand possible ramifications of these delays, we examined the association between time to operation and pathologic staging and overall survival (OS). Patients with DCIS or ER+ cT1-2N0 breast cancer treated from 2010 through 2016 were identified in the National Cancer Database. Time to operation was recorded. Factors associated with pathologic upstaging were examined using logistic regression analyses. Cox proportional hazard models were used to analyze OS. Analyses were stratified by disease stage and initial treatm