The precision of concentration sensing is improved when cells communicate. Here we derive the physical limits to concentration sensing for cells that communicate over short distances by directly exchanging small molecules (juxtacrine signaling), or over longer distances by secreting and sensing a diffusive messenger molecule (autocrine signaling). In the latter case, we find that the optimal ce...

Chickens inoculated with a transplantable lymphoid tumor developed a progressive anemia that was classified morpho logically as normochromic and normocytic. The bone marrow showed normal cellularity with no evidence of tumor metastasis, and immature erythrocytes were not detected in the peripheral blood. (Increased serum transferrin was corre lated with a decline in both packed cell volume and ...

OBJECTIVE To investigate the clinical effects of regulating umbilical cord clamping in preterm infants. DESIGN A prospective randomised study. SETTING The Queen Mother's Hospital, Glasgow. SUBJECTS 36 vaginally delivered infants over 27 and under 33 weeks' gestation. INTERVENTION Holding the infant 20 cm below the introitus for 30 seconds before clamping the umbilical cord ("regulated" ...

this study was conducted to determine the prevalence and effect of parasitic infection on erythrocyte indices in trade camels slaughtered in maiduguri, nigeria. two hundred adult one humped camels comprised of 87 (43.5 %) males and 113 (56.5 %) females were examined for helminths and hemoparasites at their slaughter time according to the standard procedures. an overall prevalence of 79 % for si...

Figure 1. The top image shows a Mott cell. The bottom left image shows a similar Mott cell packed with spherical cytoplasmic inclusions. The bottom right image shows a plasmacytoid lymphocyte with deep basophilic cytoplasm (Leishman stain; magnification 1000 x).

Dear Sir, We read with interest the report by Knobloch et al. on the feasibility of cardiac surgery in a patient with paroxysmal nocturnal hemoglobinuria (PNH). Given the lack of literature in this area we would like to report on another patient with PNH who underwent coronary artery bypass grafting without perioperative complications. Case summary. A 62-year old woman presented in October 2001...

This paper introduces PAPA: Packed Arithmetic on a Prefix Adder, a new approach to parallel prefix adder design that supports a wide variety of packed arithmetic computations, including packed add and subtract with saturation, packed rounded average, and packed absolute difference. The approach consists of altering the prefix adder cell logic equations to take advantage of a previously unused “...

This study aimed to determine the best dose of purslane flour on red blood cells, hemoglobin, and packed cell volume in Jawarandu Goats. research was conducted February-March 2021 at Rambon Asri Cattle Group, Rejo Village, Seputih Raman District, Central Lampung Regency, Province. Examination carried out Veterinary Center The experiment used a completely randomized design (CRD) with 4 treatment...