Patients with sarcomas circulate a population of lymphocytes that exert cytotoxicity to cultured sarcoma cells; these lymphocytes behave as if pre­ sensitization to sarcoma-distinctive antigen(s) occurred already in vivo. This cytotoxic effect can be abrogated by sarcoma-specific blocking serum factors. Another “noncommitted” population of lymphocytes may gain d e novo immune reactivity to allo...

The temporal variation in the stillbirth rates (SBR), measured as the number of stillborn per 1000 total births, among singletons, twins and triplets was studied on Swedish birth data for the period 1869 to 2001 and comparisons with data from other populations were made. Among both single and multiple births there were marked, almost monotonously decreasing trends in the stillbirth rates. Among...

Background Male infertility management has made significant progress during the past three decades, especially after the introduction of intracytoplasmic sperm injection (ICSI) in 1992. However, many boys and men still suffer from primary testicular failure due to acquired or genetic causes. New and novel treatments are needed to address these issues. Spermatogenesis originates from spermatogon...

Techniques to image elasticity parameters (i.e., elastography) have recently become of great interest to researchers. In this paper we use conventional ultrasound elastography and x-ray CT to image radio frequency (RF) ablation sites of excised canine liver enclosed in gelatin. Thermal coagulations of different sizes were produced by applying the RF procedure for various times and end point tem...

The morphology of embryos produced by in vitro fertilization (IVF) is commonly used to estimate their viability. However, imaging by standard microscopy is subjective and unable to assess the embryo on a cellular scale after compaction. Optical coherence tomography is an imaging technique that can produce a depth-resolved profile of a sample and can be coupled with speckle variance (SV) to dete...

When in vitro IgG production by mitogen-stimulatecl peripheral lymphocytes from healthy aged (70-93 year old) and young (20-29 year old) subjects was compared, it was found that the level of IgG production was elevated in the aged subjects. Coculture studies were performed to determine whether the increase was clue to changes in T or non-T cells. IgG production was significantly higher when ref...

A study was conducted to investigate the effect of follicular size (small,