The chromosomal spread and karyotype of Bleak (Alburnus alburnus) from Anzali lagoon were identified using tissue squashing techniques with injection of 0.5ml/100g body weight of 0.01% Colchicines solution in fish fingerlings. Kidney and gill tissues were then extracted and chopped in KCl 0.045M for 20 min and fixed in Carnoy solution in 3 stages. The chromosomal spreads were stained in 20% Gim...

Cytological information is absolutely lacking for the Iranian moss flora (Bryophytes). The present research, dealing with cytological studies on the following five species (including two expressions and one variety) of Iranian mosses, namely, Amblystegium riparium (Hedw.) B.S.G. “brevipes” expression(n=20), A. riparium (Hedw.) B.S.G. “pennellii” expression (n=9, 9+m, 9+2m), A. serpens (Hedw.) B...

we are reporting a case of 47 chromosome complement with an extra rearranged chromosome 22pter→22qll:: llq23 → llqter in a child with multiple malformations whose mother has a balanced reciprocal translocation t(1l,22) with a history of two previous abortions. we emphasize the importance of family study in such cases.

Abstract Background The presence of small supernumerary marker chromosomes (sSMCs) in a karyotype leads to diagnostic questions because the resulting extra material may cause abnormal development depending on origin duplication/triplication. Because SMCs are so small, their cannot be determined by conventional cytogenetic techniques, and new molecular methods necessary. Here, we applied target ...

in this study, chromosome analyses were performed on 70 infertile azoospermic and oligospermic (<20 million/ml) men, and also cultures of peripheral blood lymphocytes by high resolution banding method were analysed as well. it is revealed 8 (11.43 percent) men with chromosomal abnormality. there were 31.4 percent patients with azoospermia and 68.6 percent with oligospermia from several thousand...

the polygene chromosomal pattern together with the somatic and meiotic chromosomes of the autogenous tehran strain of culex pipiens molestus is described. the first and third chromosomes are metacentric, the second one is slightly submetacentric. each chromosome has well-defined, large puffed char­acteristic centromeres. randomly distributed asynaptic regions on the polytens chromosomes are ind...

Trastuzumab conjugated to ?-amanitin kills HER2-low breast cancer cells with loss of chromosome 17p and enhances checkpoint blockade therapy.

SUMMARY Genomic imprinting and X chromosome inactivation (XCI) require epigenetic mechanisms to direct allele-specific expression. Despite their critical roles in embryonic development, how universal regulators coordinate these specific tasks from single locus chromosome-scale remains understudied. Here, we systematically disrupted multiple essential pathways within polymorphic F1 zygo...

Chromosomal characteristics and karyological analysis of three Dixonius, including D. hangseesom, siamensis melanostictus, from Thailand were studied. Chromosome preparations conducted by squash technique bone marrow testis. Conventional Giemsa’s staining Ag-NOR banding techniques applied to stain the chromosome. The results showed that diploid chromosomes are 2n=40, for hangseesom siamensis; 2...