Is CHICKEN SALAD ON A CROISSANT vegan?

chicken breast meat (with water, seasoning [salt, maltodextrin, natural flavors, onion powder, yeast extract, garlic powder, canola oil, carrageenan, silicon dioxide], sodium tripolyphosphate, salt), croissant (enriched wheat flour [contains niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid], water, unsalted butter, milk with vitamin d added, sugar, yeast, salt, contains 2% or less of: dough conditioner [wheat flour, salt, nonfat dry milk, datem, enzyme blend (sodium chloride, calcium sulfate and calcium silicate (anti-caking), wheat starch, enzyme preparation, sunflower oil), soybean oil, soy lecithin, dextrose, ascorbic acid]), dressing (mayonnaise [soybean oil, eggs and egg yolks, water, vinegar, sugar, salt, lemon juice concentrate, natural flavor, paprika, calcium disodium edta (preservative)], sour cream [cream, skim milk, modified corn starch, lactic and citric acid, beef gelatin, mono and diglycerides, guar gum, carrageenan, sodium phosphate, natural and artificial flavor], water, corn syrup, contains 2% or less of: salt, sugar, distilled vinegar, mustard seed, spice, chicken meat and natural chicken juices, chicken fat, hydrolyzed [corn and wheat gluten, soy] protein, dried whey, maltodextrin, autolyzed yeast extract, natural and artificial flavor, disodium inosinate, disodium guanylate, natural extractives of turmeric and annatto [for color], dehydrated onion, modified corn starch, xanthan gum, potassium sorbate and sodium benzoate [preservative]), lettuce, celery, red onions.

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