Nature's first photoreceptor was presumably a photosynthetic apparatus, at first it might
have been macromoleeules or granules containing chlorophyll, then vesicles and lamellae …

The development and evolution of the endotracheal tube (ETT) have been closely related to
advances in surgery and anesthesia. Modifications were made to accomplish many tasks, …

… Stebbins and me in our first paper (Stebbins and Eakin, 1958). We proposed that the organ
serves an animal, such as Sceloporus, as a dosimeter of solar radiation. The information gained …

… (Eakin, … eg, Eakin, 1963) between ciliary and rhabdomeric photoreceptors, because Dilly
says: "the tubules [of the receptors under discussion] are typical of receptors classified by Eakin (…

Background The global burden of hypertension and other non-communicable diseases (NCDs)
is rapidly increasing, and the African continent seems to be the most affected region in …

Background. The 29-item ‘Medical Interview Satisfaction Scale’ (MISS-29) was developed
in the USA to assess patient satisfaction with individual doctor–patient consultations. It has …

Chone ecaudata, a sabellid fanworm, has a cluster of two to four ocelli embedded within
each side of the brain and a pair of pygidial ocelli on the tail. Both types of ocelli have …

Every explorer is thrilled by the unique and the beautiful. How great must have been the
wonder of the first men to view the Grand Canyon of the Colorado, Victoria Falls, Fujiyama on a …

The four pairs of eyes in two species of jumping spiders (Metaphidippus harfordi and
Phidippus johnsoni) were studied by light and electron microscopy. Unique features of the …

This essay presents an updating of the author's theory that there are two major lines in the
evolution of photoreceptors, one ciliary and the other rhabdomeric (microvillar). Arguments …