Endodontic Treatment for a Mesiodens: A Case Report.

Mesiodens are common supernumerary teeth that prominently erupt in the midline between the maxillary central incisors. If two or more mesiodens are present, they are termed mesiodentes, indicating the presence of multiple supernumerary teeth in the midline. These often cause aesthetic disharmony in the anterior teeth due to their abnormal position, leading to extraction in most cases and resulting in midline diastema when impacted or partially erupted.

Conservative Management of a Rare Contiguously Spread Splenic Abscess.

Splenic abscess is a rare condition that generally results from hematogenous spread and affects individuals with hemoglobinopathies or immunocompromising conditions. Although optimal management has recently been under contention, this condition was traditionally managed with splenectomy. We present a rare case of a 58-year-old male with chronic pancreatitis that developed a splenic abscess via a contiguous spread of a pancreatic pseudocyst.

Atypical mycobacteria as the probable cause of positive tuberculin reactions in squirrel monkeys (Saimiri sciureus).

Three of 275 squirrel monkeys (Saimiri sciureus) demonstrated a positive reaction to Koch's old tuberculin within 72 hours after the test. The animals were again positive when retested 1 week later. Two of the monkeys were killed and necropsied.

In vitro DNA synthesis in lymphocytes from turkeys vaccinated with LaSota, TC, and inactivated Newcastle disease vaccines.

In vitro cultures of peripheral blood lymphocytes from turkeys vaccinated and revaccinated with Newcastle disease (ND) vaccines were stimulated to transformation when exposed to the homologous and heterologous strains of ND virus. The mitogenesis was measured by the uptake of 3H-thymidine into newly synthesized DNA. There was considerable difference in DNA synthesis by lymphocytes drawn 0, 2, 5, and 10 days after vaccination and revaccination with the three vaccines.

Antibody response and resistance of turkeys to Newcastle disease vaccine strain LaSota.

Studies were undertaken to determine the influence of repeated revaccination on the immune response in immuno-competent turkeys as measured by humoral antibody and resistance to challenge. Protection was better in turkeys given the LaSota spray vaccine at 4 weeks and 30 days later than in turkeys given one vaccination by spray or intramuscular route or exposed 4 times at 10-day intervals by the aerosol route. The anamnestic response, as measured by the HI tests to revaccination with the same immunogen, was not evident by the 3rd day postrevaccination but was observed on the 7th day.