Formalin pigment - Study guides, Class notes & Summaries

This organism is gram(+) cocci in pairs that are often Lancelet-shaped (or "cat-eyes") Streptococcus pneumoniae These colonies were slow growing, small, entire and show soft beta hemolysis. Plump, Gram-negative coccobacilli, lying singly, in pairs and short chains, are seen on gram stain. Most strains are chemically non-reactive except for a positive oxidase reaction and acid produced from dextrose and maltose. What is the name of the isolate? Kingella kingae The oxidase test i...

What method is used to stabilize proteins making it resistant to further damage? - ANSWER-Fixation Name two methods of fixation? - ANSWER-Chemical reaction (formaldehyde) and physical (heat or dessication) What are two causes of Post mortem putrefaction if the tissue is not fixed? ***** - ANSWER-bacteria or mold What factor causes autolysis if tissue is not fixed? **** - ANSWER-enzyme attack What are four functions of fixatives? - ANSWER-1. kills tissue to prevent putrefaction and au...

Oxytocin and antidiuretic hormone are two of the hormones secreted by the - ANSWER-Pituitary The primary antibody must be diluted 1:100 for an immunohistochemical procedure. How many micro liters of the primary antibody would be required to prepare a total volume of 2mL? - ANSWER-240 How many grams of NaOH (MW=40) are required to prepare a liter of 1N NaOH? - ANSWER-40 A one normal solution is equivalent to: - ANSWER-1 gram-equivalent weight of solute per 1L of solution (g/L) The num...

Acetic acid - ANSWER-This fixative does not fix or destroy carbohydrates, and it does not fix lipids. It penetrates very rapidly and leaves tissue very soft. It is added to many fixative mixtures because of its ability to fix nuclei. Glutaraldehyde - ANSWER-Techniques using Schiff reagent, such as the periodic acid-Schiff (PAS) stain, cannot be used on __________ fixed tissues because false positive results will be obtained. Glyoxal - ANSWER-This fixative is the smallest dialdehyde and is ...

NYS Department of State, define which one of the following terms as the physical removal of all visible dust, soil and any other foreign material from object. - Answer cleaning According to NYS law, waxing license expire what period of time after issue? - Answer 4 years the making of any false statement in a license application will be fine not exceeding - Answer $500 According NYS Department of State, the absence of which on of the following in an appearance enhancement workplace is pr...

CSMLS practice questions and answers 2023 with complete solution Which of the following actions should be taken when the hematoxylin and eosin stain lacks three distinct shades of pink? a. check pH of fixative b. replace hematoxylin c. check pH of eosin d. increase time in water c. check pH of eosin A dark brown pigment is noted on formalin fixed, hematoxylin and eosin stained section. What action can prevent this from occurring? a. maintain formalin at a neutral pH b. treat sections ...

CSMLS PRACTICE EXAM QUESTIONS WITH CORRECT ANSWERS 100% 2024

CSMLS practice questions and answers 2023 with complete solution Which of the following actions should be taken when the hematoxylin and eosin stain lacks three distinct shades of pink? a. check pH of fixative b. replace hematoxylin c. check pH of eosin d. increase time in water c. check pH of eosin A dark brown pigment is noted on formalin fixed, hematoxylin and eosin stained section. What action can prevent this from occurring? a. maintain formalin at a neutral pH b. treat sections ...

Resolution - ANSWER-Ability of a microscope to distinguish two objects as separate What do you call a measurement of 10^-6 m? - ANSWER-Micrometer, or micron Light Microscope - ANSWER-microscope that uses a beam of light passing through one or more lenses to magnify an object What resolving power does a light microscope have? - ANSWER-0.25 micrometers Types of Light microscopes (4) - ANSWER-- Simple (Dissecting) - Compound (What we use in lab to view slides regularly) - Dark Field (...

HTL ASCP Exam- Fixatives questions and answers. A+ test Acetic Acid Non coagulant, penetrates quickly and leaves tissues very soft. Used often as an additive to precipitate and preserve the nucleoproteins and fix the nuclei. Acetic Acid Swells tissues dramatically by breaking collagen bonds and allowing bonds to absorb water. Used as additive to counter-act the shrinking effect of other fixatives. 00:30 01:41 Formaldehyde Non coagulant and additive fixative that react...