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Solving mystery of the four-headed echidna penis

Credit: Picture: Jane Fenelon
Scientists from the University of Melbourne and University of Queensland have revealed the mystery behind the unique reproductive parts of the much-loved echidna.
In the paper, The Unique Penile Morphology of the Short-Beaked Echidna, Tachyglossus aculeatus , the team detail how the male monotreme s testes never descend, have no scrotum, and when not in use, their penis is stored internally.
They also detail how the echidna penis has four heads, which are actually rosette-like glans at the end. Just two of the four glans ever become functional during erection and which glans are functional appears to alternate between subsequent erections. ....

South Australia , Gold Coast , Monash University , University Of Melbourne , University Of Queensland , Sexual Development , Unique Penile Morphology , Short Beaked Echidna , Currumbin Wildlife Sanctuary , Developmental Reproductive Biology , Zoology Veterinary Science , Earth Science , தெற்கு ஆஸ்திரேலியா , தங்கம் கடற்கரை , மோனாஷ் பல்கலைக்கழகம் , பல்கலைக்கழகம் ஆஃப் மெல்போர்ன் , பல்கலைக்கழகம் ஆஃப் குயின்ஸ்லாந்து , பாலியல் வளர்ச்சி , கர்ரம்பின் வனவிலங்கு சரணாலயம் , வளர்ச்சி இனப்பெருக்கம் உயிரியல் ,

New study reveals how smoking during puberty can cause negative consequences in offspring

Credit: Eivind Senneset
Smoking in early puberty in boys may have negative consequences for their future generations of offspring, a study from the University of Bergen (UiB) shows.
By continued analysis of data gathered in the large international RHINESSA, RHINE and ECRHS studies, researchers have found that the health of future generations depends on actions and decisions made by young people today. This is particularly relevant for boys in early puberty and mothers/grandmothers both pre-pregnancy and during pregnancy, the study shows.
The paper Prenatal and prepubertal exposures to tobacco smoke in men may cause lower lung function in future offspring: a three-generation study using a causal modelling approach was recently published in the ....

World Health Organization , University Of Bergen Ui , European Respiratory , Developmental Reproductive Biology , Medicine Health , Developmental Reproductive Biology , Immunology Allergies Asthma , Pulmonary Respiratory Medicine , Urogenital System , Public Health , Smoking Tobacco , உலகம் ஆரோக்கியம் ஆர்கநைஸேஶந் , பல்கலைக்கழகம் ஆஃப் பெர்கன் உய் , ஐரோப்பிய சுவாச , வளர்ச்சி இனப்பெருக்கம் உயிரியல் ,

Telomere length, a longevity measure, may be determined early in life

One of the first studies to examine telomere length (TL) in childhood finds that the initial setting of TL during prenatal development and in the first years of life may determine one s TL throughout childhood and potentially even into adulthood or older age. The study also finds that TL decreases most rapidly from birth to age 3, followed by a period of maintenance into the pre-puberty period, although it was sometimes seen to lengthen. ....

Jie Yu , Whitney Cowell , Julie Herbstman , Jia Guo , Andreaa Baccarelli , Deliang Tang , Columbia Center , Columbia Mailman School , Environmental Protection Agency , Icahn School Of Medicine At Mount Sinai , National Institutes Of Health , Environmental Health , Columbia University Mailman School , Columbia Mailman , Icahn School , Shuang Wang , Frederica Perera All , Fine Foundations , National Institutes , Developmental Reproductive Biology , Medicine Health , Environmental Health , ஜிே யூ , விட்னி சவுல் , ஜியா கூவோ , கொலம்பியா மையம் ,

Eating habits change only slightly after gestational diabetes diagnosis, NIH study suggests

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Pregnant women made only modest dietary changes after being diagnosed with gestational diabetes, according to a study by researchers at the National Institutes of Health. Women with gestational diabetes are generally advised to reduce their carbohydrate intake, and the women in the study did cut their daily intake of juice and added sugars. They also increased their intake of cheese and artificially sweetened beverages. However, certain groups of women did not reduce their carbohydrate intake, including women with obesity, had more than one child, were Hispanic, had a high school degree or less, or were between the ages of 35-41 years. ....

Stefanien Hinkle , Human Development , Epidemiology Branch , Us Department Of Health , Human Services , National Institutes Of Health , Journal Of The Academy Nutrition , National Institutes , Kennedy Shriver National Institute , Child Health , Growth Studies , Eunice Kennedy Shriver National Institute , Developmental Reproductive Biology , Medicine Health , Developmental Reproductive Biology , Diet Body Weight , Metabolism Metabolic Diseases , Public Health , மனிதன் வளர்ச்சி , தொற்றுநோய் கிளை , எங்களுக்கு துறை ஆஃப் ஆரோக்கியம் , மனிதன் சேவைகள் , தேசிய நிறுவனங்கள் ஆஃப் ஆரோக்கியம் , இதழ் ஆஃப் தி கலைக்கழகம் ஊட்டச்சத்து , தேசிய நிறுவனங்கள் , கெந்நெடீ ஶ்ரைவர் தேசிய நிறுவனம் ,

Living foams

In the earliest stage of life, animals undergo some of their most spectacular physical transformations. Once merely blobs of dividing cells, they begin to rearrange themselves into their more characteristic forms, be they fish, birds or humans. Understanding how cells act together to build tissues has been a fundamental problem in physics and biology. ....

Sangwoo Kim , Georginaa Stooke Vaughan , Marie Pochitaloff , Santa Barbara , Otger Camp , Mellichamp Chair , Systems Biology , Nature Physics , Biomechanics Biophysics , Cell Biology , Chemistry Physics Materials Sciences , Medicine Health , Developmental Reproductive Biology , Technology Engineering Computer Science , Biomedical Environmental Chemical Engineering , சாந்தா பார்பரா , அமைப்புகள் உயிரியல் , இயற்கை இயற்பியல் , பயோமெக்கானிக்ஸ் உயிர் இயற்பியல் , செல் உயிரியல் , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் , மருந்து ஆரோக்கியம் , வளர்ச்சி இனப்பெருக்கம் உயிரியல் , தொழில்நுட்பம் பொறியியல் கணினி அறிவியல் , உயிர் மருத்துவ சுற்றுச்சூழல் இரசாயன பொறியியல் ,