Nursing Student's Satisfaction With Virtual Learning During COVID-19 Pandemic in India.

Introduction: The COVID-19 pandemic significantly impacted the world in 2020. Every country adopted quarantine measures to prevent the transmission of the coronavirus infection. These measures resulted in dramatic changes in the daily lives of most people.

EWSR1 and ATF1 rearrangements in clear cell odontogenic carcinoma: presentation of a case.

Clear cell odontogenic carcinoma (CCOC) is a rare odontogenic tumor of the jaws that is more common in the mandible than maxilla and has a female preponderance with a peak incidence in the sixth decade. It is characterized by locally aggressive behavior and has the potential to metastasize. This tumor was recently reported to have a rearrangement of the Ewing sarcoma breakpoint region 1 gene (EWS RNA-binding protein 1, EWSR1) in 5 of 8 cases tested and of the activating transcription factor 1 gene (ATF1) in 1 case tested.

Ovotesticular disorder of sexual development (true hermaphroditism).

Objectives: To determine the mechanism for the 46,XX/46,XY karyotype observed in a patient with an ovotesticular disorder of sexual development (ie, true hermaphroditism).

Methods: Cytogenetic, molecular cytogenetic, and molecular DNA analyses were performed on the blood, skin, and left and right gonadal tissue from 2 surgical procedures. The results of these studies were used to determine whether the ovotesticular disorder of sexual development resulted from mosaicism or tetragametic chimerism.

Prenatal diagnosis of trisomy 3 mosaicism.

Objectives: To present the clinical, cytogenetic, and molecular cytogenetic findings of prenatally diagnosed trisomy 3 mosaicism.

Case And Methods: Trisomy 3 mosaicism is rare, and only two cases of prenatally diagnosed trisomy 3 mosaicism have been reported. Amniocentesis, performed for AMA, revealed a karyotype of 47,XX, + 3[8]/46,XX[27].

Prenatal diagnosis of a rare inherited heterochromatic variant chromosome 4.

Heterochromatic chromosome polymorphisms have been extensively reported. Most are associated with C-band positive regions located on chromosomes 1, 9, 16, and Y. We report a prenatal case of a rare heterochromatic variant on chromosome 4.