BIOCHEMISTRY

Autosomal Aneuploidy

Jun 17, 2017 by in BIOCHEMISTRY Comments Off on Autosomal Aneuploidy

Trisomy   Maternal     Paternal   References  MI MII MI or MII Mitotic Totala MI MII MI or MII Mitotic Totala    2   4 1  6 1  13 5     5 [30]  7   2…

read more

Instrumentation in the Cytogenetics Laboratory

Jun 17, 2017 by in BIOCHEMISTRY Comments Off on Instrumentation in the Cytogenetics Laboratory

Fig. 7.1 Multiprep robotic harvester. This device was designed specifically for cytogenetics laboratories, with enhancements such as automatic fixative mixing, integral fume extraction, multiple dispensing, and aspiration probes to reduce…

read more

Prenatal Cytogenetics

Jun 17, 2017 by in BIOCHEMISTRY Comments Off on Prenatal Cytogenetics

Type of abnormality Total abnormalities (%) Sex chromosomes, males 47,XYY  45 (0.103) 47,XXY  45 (0.103) Other  32 (0.073) Sex chromosomes, females 45,X 6 (0.024) 47,XXX  27 (0.109) Other 9 (0.036)…

read more

The Essentials of Light Microscopy

Jun 17, 2017 by in BIOCHEMISTRY Comments Off on The Essentials of Light Microscopy

Fig. 5.1 Conjugate planes in the optical microscope (cutaway). In this cutaway of a modern microscope, “image” planes are marked in black while “aperture” planes are marked in red, denoting…

read more

Basic Cytogenetics Laboratory Procedures

Jun 17, 2017 by in BIOCHEMISTRY Comments Off on Basic Cytogenetics Laboratory Procedures

Overview of cell culture and harvest Culture initiation → Culture maintenance → Cell harvest Living cells→ Sterility→ Arrest division Sterility→ Optimal temperature→ Swell cells Proper growth medium→ Optimal pH→ Fix…

read more

Genomic Imprinting and Uniparental Disomy

Jun 17, 2017 by in BIOCHEMISTRY Comments Off on Genomic Imprinting and Uniparental Disomy

Fig. 20.1 Diagrammatic representation of the imprinting process. Light-colored circles represent undermethylated genes, dark-colored circles represent hypermethylated genes. m maternally derived chromosome, pink. p paternally derived chromosome, blue. See text…

read more

The Cytogenetics of Infertility

Jun 17, 2017 by in BIOCHEMISTRY Comments Off on The Cytogenetics of Infertility

Fig. 11.1 Flow diagram for the workup of a woman with delayed puberty (Courtesy of Dr. Lawrence Layman.) PCOS polycystic ovary syndrome, CAIS complete androgen insensitivity syndrome, FSH follicle-stimulating hormone,…

read more

Genetic Counseling

Jun 17, 2017 by in BIOCHEMISTRY Comments Off on Genetic Counseling

Fig. 21.1 Pedigree of a family carrying a balanced translocation involving the long arm of chromosome 7 and the short arm of chromosome 10. See key for interpretation of symbols…

read more
Get Clinical Tree app for offline access