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Geochemical methods help manage wildlife by revealing toxic elements and diet details in Yellowstone.

Shoulder guard hair best shows sika deer's diet.

Sika deer shoulder hair is good for analysis.

Finasteride modifies 5-alpha-reductases through a two-step process, affecting inhibitor potency and possibly causing side effects.

The document concludes that better biomarkers are needed to detect long-term oral testosterone use in athletes.

Shrunken heads retain some facial features and hair characteristics, allowing for limited individual identification.

Accurate quantitative bioanalysis using LC-MS/MS is challenging due to matrix effects, but using internal standards and new methods like in-sample calibration could improve results.

The 39th Manfred Donike Workshop discussed methods for detecting misuse of steroids, gene doping, and the complexity of identifying drug residues in urine, highlighting the ongoing efforts to improve global anti-doping work.

Sebocytes play a key role in controlling androgen levels in human skin.

A new method was developed to analyze certain hormones and drugs in human blood efficiently.

A quick method was developed to detect banned substances in urine for doping control.

A new method accurately measures nine steroid hormones in human serum with high sensitivity.

A reliable method was developed to measure aristolochic acid-I in rat blood.

Changes in δ¹⁵N values in hair can indicate stress or health issues.

The method effectively images and correlates elements and metabolites in tissue samples at a micron scale.

Researchers developed a reliable method to measure testosterone and epitestosterone in urine for medical and anti-doping use.

Ancient herders in the Keriya Valley fed their animals mainly C3 plants, with some C4 plant feeding possibly due to herd movement or seasonal changes.

Cadmium sticks to hair differently for each person, and strong acid can mostly remove it.

Cows can safely graze after a nuclear incident if iodine exposure is managed, as doses below 30 Gy don't harm them long-term.

Transglutaminase does not modify human hair.

The substance MK386 effectively blocked testosterone conversion and reduced cell growth in certain skin cells, but inhibiting 5α-reductase alone may not greatly improve acne.

A man with a new type of male pattern hair loss that affects the back of the head responded well to common hair loss treatments.

Silver oxide nanoparticles help detect small molecules effectively.

Bioelectronic nanogenerators show promise for cancer treatment but need better understanding and development.

Using LC-MS/MS for hormone measurement can prevent false high testosterone results and avoid unnecessary tests.

Public education on iodine use is crucial for radiation protection, especially for children.

Monitoring steroid hormones in blood can better detect testosterone doping.

TOF-SIMS improved chemical mapping in cells, confirming gunshot residue, tracking anti-tumor drugs, and identifying molecules in mosquitoes and wounds.

A quick method effectively detects banned substances in urine.

A method was found to accurately measure spironolactone and canrenone in blood samples using liquid chromatography-mass spectrometry.