A critical update of Mediterranean chitons (Mollusca: Polyplacophora) with the description of new taxa.

The Mediterranean Sea houses a rather diverse chiton fauna (Mollusca: Polyplacophora). Four are here described as new, all based upon loose valves recovered from biogenic sediments: Leptochiton freiwaldi sp. nov.

Our Experience of the De la Torre-Mondragon Technique in the Surgical Management of Hirschsprung's Disease: A Report on 52 Cases.

Background: The authors report their experience of the transanal endorectal pull through technique as described by De la Torre Mondragon in the treatment of Hirschsprung's disease (HD).

Materials And Methods: It was a retro prospective, observational and descriptive hospital based study involving all proven cases of HD managed within a time frame of 8 years.

Results: Fifty two patients with a mean age of 18 months at the time of surgery.

Bedside reduction of gastroschisis: A preliminary experience in yaounde-cameroon.

Background: Gastroschisis denotes a congenital or sporadic malformation of the anterior abdominal wall, which is rarely associated with other anomalies. The mortality in African countries is still high almost 100%.

Objective: The aim was to determine the feasibility and safety of bedside reduction of gastroschisis and factors affecting the outcome in low-income setting.

Molecular analysis of (Poli, 1791) (Polyplacophora, Leptochitonidae) from the Mediterranean and near Atlantic.

In the present paper we used a molecular data set (including mitochondrial partial 16S rRNA and COI gene sequences) to examine the genetic structure of (Poli, 1791) (Polyplacophora, Leptochitonidae) - a distinctive shallow water chiton and member of the basal branching Lepidopleurida, which is widespread in and adjacent to the Mediterranean. The analyses of the two mt-standard marker fragments resolved two main discrete clusters reported as s.s.

Pre-Pandemic Cross-Reactive Immunity against SARS-CoV-2 among Central and West African Populations.

For more than two years after the emergence of COVID-19 (Coronavirus Disease-2019), significant regional differences in morbidity persist. These differences clearly show lower incidence rates in several regions of the African and Asian continents. The work reported here aimed to test the hypothesis of a pre-pandemic natural immunity acquired by some human populations in central and western Africa, which would, therefore, pose the hypothesis of an original antigenic sin with a virus antigenically close to the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2).